Process for the preparation of L-amino acids with amplification of the zwf gene

ABSTRACT

The invention relates to a process for the preparation of L-amino acids. The process involves fermenting an L-amino acid producing coryneform bacteria in a culture medium, concentrating L-amino acid in the culture medium or in the cells of the bacteria, and isolating the L-amino acid produced. The bacteria has an amplified gene encoding the Zwischenferment protein.

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This is a continuation-in-part of U.S. application Ser. No. 09/531,269, filed Mar. 20, 2000, the contents of which are incorporated by reference herein in their entirety.

FIELD OF THE INVENTION

[0002] The invention relates to a process for the preparation of L-amino acids, in particular L-lysine, L-threonine and L-tryptophan, using coryneform bacteria in which at least the Zwischenferment protein encoded by the zwf gene is amplified.

DESCRIPTION OF BACKGROUND ART

[0003] L-Amino acids are used in animal nutrition, in human medicine and in the pharmaceuticals industry. It is known that amino acids are prepared by fermentation of strains of coryneform bacteria, in particular Corynebacterium glutamicum. Because of its great importance, work is constantly being undertaken to improve the preparation process. Improvements to the process can relate to fermentation measures, such as e.g. stirring and supply of oxygen, or the composition of the nutrient media, such as e.g. the sugar concentration during the fermentation, or the working up to the product form by e.g. ion exchange chromatography, or the intrinsic output properties of the microorganism itself.

[0004] Methods of mutagenesis, selection and mutant selection are used to improve the output properties of these microorganisms. Strains which are resistant to antimetabolites, such as e.g. the threonine analogue α-amino-β-hydroxyvaleric acid (AHV), the lysine analogue S-(2-aminoethyl)-L-cystein (AEC), or are auxotrophic for metabolites of regulatory importance and produce L-amino acids such as e.g. threonine or lysine are obtained in this manner.

[0005] Methods of the recombinant DNA technique have also been employed for some years for improving the strain of Corynebacterium glutamicum strains which produce L-amino acids.

SUMMARY OF THE INVENTION

[0006] L-Amino acids are used in human medicine and in the pharmaceuticals industry, in the foodstuffs industry and especially in animal nutrition. There is therefore a general interest in providing new improved processes for the preparation of amino acids.

[0007] In general, the embodiments of the present invention provide new improved processes for the fermentative preparation of L-amino acids with coryneform bacteria. More specifically, the embodiments of the invention provide a process for the preparation of L-amino acids, in particular L-lysine, L-threonine, L-isoleucine and L-tryptophan, using coryneform bacteria in which the Zwischenferment protein (Zwf protein) encoded by the nucleotide sequence of the zwf gene is amplified, in particular over-expressed. The abbreviation “zwf” is a mnemonic for “Zwischenferment” (Jeffrey H. Miller: A Short Course In Bacterial Genetics, Cold Spring Harbor Laboratory Press, USA, 1992) and also referred to as glucose 6-phosphate dehydrogenase.

BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Embodiments of the invention will be described with reference to the following Figures, in which the base pair numbers stated are approximate values obtained in the context of reproducibility, and in which:

[0009]FIG. 1 is a map of the plasmid pEC-T18mob2;

[0010]FIG. 2 is a map of the plasmid pEC-T18mob2zwf;

[0011]FIG. 3 is a map of the plasmid PAMC1;

[0012]FIG. 4 is a map of the plasmid pMC1; and

[0013]FIG. 5 is a map of the plasmid pCR2.1poxBint.

DETAILED DESCRIPTION OF THE INVENTION

[0014] The strains employed preferably already produce L-amino acids before amplification of the zwf gene. The term “amplification” in this connection describes the increase in the intracellular activity of one or more enzymes or proteins in a microorganism which are coded by the corresponding DNA, for example by increasing the number of copies of the gene or genes, using a potent promoter or using a gene which codes for a corresponding enzyme or protein having a high activity, and optionally combining these measures.

[0015] By amplification measures, in particular over-expression, the activity or concentration of the corresponding enzyme or protein is in general increased by at least 10%, 25%, 50%, 75%, 100%, 150%, 200%, 300%, 400% or 500%, up to a maximum of 1000% or 2000%, based on that of the wild-type enzyme or protein or the activity or concentration of the enzyme or protein in the starting microorganism.

[0016] The microorganisms which the present invention provides can prepare L-amino acids from glucose, sucrose, lactose, fructose, maltose, molasses, starch, cellulose or from glycerol and ethanol. They are representatives of coryneform bacteria, in particular of the genus Corynebacterium. Of the genus Corynebacterium, there may be mentioned in particular the species Corynebacterium glutamicum, which is known among specialists for its ability to produce L-amino acids.

[0017] Suitable strains of the genus Corynebacterium, in particular of the species Corynebacterium glutamicum, are, for example, the known wild-type strains

[0018]Corynebacterium glutamicum ATCC13032

[0019]Corynebacterium acetoglutamicum ATCC15806

[0020]Corynebacterium acetoacidophilum ATCC13870

[0021]Corynebacterium thermoaminogenes FERM BP-1539

[0022]Brevibacterium flavum ATCC14067

[0023]Brevibacterium lactofermentum ATCC13869

[0024]Brevibacterium divaricatum ATCC14020

[0025] and L-amino acid-producing mutants prepared therefrom, such as, for example, the L-threonine-producing strains

[0026]Corynebacterium glutamicum ATCC21649

[0027]Brevibacterium flavum BB69

[0028]Brevibacterium flavum DSM5399

[0029]Brevibacterium lactofermentum FERM-BP 269

[0030]Brevibacterium lactofermentum TBB-10

[0031] and such as, for example, the L-isoleucine-producing strains

[0032]Corynebacterium glutamicum ATCC 14309

[0033]Corynebacterium glutamicum ATCC 14310

[0034]Corynebacterium glutamicum ATCC 14311

[0035]Corynebacterium glutamicum ATCC 15168

[0036]Corynebacterium ammoniagenes ATCC 6871

[0037] and such as, for example, the L-tryptophan-producing strains

[0038]Corynebacterium glutamicum ATCC21850 and

[0039]Corynebacterium glutamicum KY9218(pKW9901)

[0040] and such as, for example, the L-lysine-producing strains

[0041]Corynebacterium glutamicum FERM-P 1709

[0042]Brevibacterium flavum FERM-P 1708

[0043]Brevibacterium lactofermentum FERM-P 1712

[0044]Corynebacterium glutamicum FERM-P 6463

[0045]Corynebacterium glutamicum FERM-P 6464

[0046]Corynebacterium glutamicum ATCC13032

[0047]Corynebacterium glutamicum DM58-1

[0048]Corynebacterium glutamicum DSM12866.

[0049] It has been found that coryneform bacteria produce L-amino acids, in particular L-lysine, L-threonine and L-tryptophan, in an improved manner after over-expression of the zwf gene which codes for the Zwf protein or Zwf polypeptide, respectively.

[0050] JP-A-09224661 discloses the nucleotide sequence of the zwf gene of Brevibacterium flavum MJ-223 (FERM BP-1497) and refers to the protein encoded by the zwf-gene as glucose 6-phosphate dehydrogenase. The sequence information disclosed in JP-A-09224661 is shown in SEQ ID NO: 7 and 8. JP-A-09224661 describes the N-terminal amino acid sequence of the Zwf polypeptide as Met Val Ile Phe Gly Val Thr Gly Asp Leu Ala Arg Lys Lys Leu (SEQ ID NO: 8).

[0051] However, it has not been possible to confirm this. Instead, the following N-terminal amino acid sequence has been found: Met Ser Thr Asn Thr Thr Pro Ser Ser Trp Thr Asn Pro Leu Arg Asp (SEQ ID NO: 10). The nucleotide sequence of the corresponding zwf gene is shown in SEQ ID NO: 9. The methionine residue in the N-position can be split off in the context of post-translational modification, and Ser Thr Asn Thr Thr Pro Ser Ser Trp Thr Asn Pro Leu Arg Asp is then obtained as the N-terminal amino acid sequence.

[0052] Accordingly, embodiments of this invention provide the nucleotide sequence of a novel zwf gene from a coryneform bacterium shown in SEQ ID NO: 9 nucleotides 538 to 2079. Genes encoding Zwf proteins from Gram-negative bacteria e.g. Escherichia coli or other Gram-positive bacteria e.g. Streptomyces or Bacillus may optionally be used. Alleles of the zwf gene which result from the degeneracy of the genetic code or due to sense mutations of neutral function can furthermore be used. The use of endogenous genes in particular endogenous genes from coryneform bacteria is preferred. “Endogenous genes” or “endogenous nucleotide sequences” refer to genes or nucleotide sequences which are available in the population of a species.

[0053] To achieve an amplification (e.g., over-expression), the number of copies of the corresponding genes is increased, or the promoter and regulation region or the ribosome binding site upstream of the structural gene is mutated. Expression cassettes which are incorporated upstream of the structural gene act in the same way. By inducible promoters, it is additionally possible to increase the expression in the course of fermentative L-amino acid formation. The expression is likewise improved by measures to prolong the life of the mRNA. Furthermore, the enzyme activity is also increased by preventing the degradation of the enzyme protein. The genes or gene constructs are either present here in plasmids with a varying number of copies, or are integrated and amplified in the chromosome. Alternatively, an over-expression of the genes in question can furthermore be achieved by changing the composition of the media and the culture procedure.

[0054] Instructions in this context can be found by the expert, inter alia, in Martin et al. (Bio/Technology 5, 137-146 (1987)), in Guerrero et al. (Gene 138, 35-41 (1994)), Tsuchiya and Morinaga (Bio/Technology 6, 428-430 (1988)), in Eikmanns et al. (Gene 102, 93-98 (1991)), in European Patent Specification EPS 0 472 869, in U.S. Pat. No. 4,601,893, in Schwarzer and Pulhler (Bio/Technology 9, 84-87 (1991), in Reinscheid et al. (Applied and Environmental Microbiology 60, 126-132 (1994)), in LaBarre et al. (Journal of Bacteriology 175, 1001-1007 (1993)), in Patent Application WO 96/15246, in Malumbres et al. (Gene 134, 15-24 (1993)), in Japanese Laid-Open Specification JP-A-10-229891, in Jensen and Hammer (Biotechnology and Bioengineering 58, 191-195 (1998)) and in known textbooks of genetics and molecular biology.

[0055] By way of example, the Zwf protein was over-expressed with the aid of a plasmid. The E. coli-C. glutamicum shuttle vector pEC-T18mob2 shown in FIG. 1 was used for this. After incorporation of the zwf gene into the KpnI/SalI cleavage site of pEC-T18mob2, the plasmid pEC-T18mob2zwf shown in FIG. 2 was formed. Other plasmid vectors which are capable of replication in C. glutamicum, such as e.g. pEKEx1 (Eikmanns et al., Gene 102:93-98 (1991)) or pZ8-1 (EP-B-0 375 889), can be used in the same way.

[0056] In addition, it may be advantageous for the production of L-amino acids to amplify one or more enzymes of the particular biosynthesis pathway, of glycolysis, of anaplerosis, of the pentose phosphate pathway or of amino acid export, in addition to amplification of the zwf gene.

[0057] Thus, for example, in particular for the preparation of L-threonine, one or more genes chosen from the group consisting of:

[0058] the hom gene which codes for homoserine dehydrogenase (Peoples et al., Molecular Microbiology 2, 63-72 (1988)) or the hom^(dr) allele which codes for a “feed back resistant” homoserine dehydrogenase (Archer et al., Gene 107, 53-59 (1991),

[0059] the gap gene which codes for glyceraldehyde 3-phosphate dehydrogenase (Eikmanns et al., Journal of Bacteriology 174: 6076-6086 (1992)),

[0060] the pyc gene which codes for pyruvate carboxylase (Peters-Wendisch et al., Microbiology 144: 915-927 (1998)),

[0061] the mqo gene which codes for malate:quinone oxidoreductase (Molenaar et al., European Journal of Biochemistry 254, 395-403 (1998)),

[0062] the tkt gene which codes for transketolase (accession number AB023377 of the European Molecular Biologies Laboratories databank (EMBL, Heidelberg, Germany)),

[0063] the gnd gene which codes for 6-phosphogluconate dehydrogenase (JP-A-9-224662),

[0064] the thrE gene which codes for the threonine export protein (DE 199 41 478.5; DSM 12840),

[0065] the zwal gene (DE 199 59 328.0; DSM 13115),

[0066] the eno gene which codes for enolase (DE: 199 41 478.5)

[0067] can be amplified, in particular over-expressed, at the same time.

[0068] Thus, for example, in particular for the preparation of L-lysine, one or more genes chosen from the group consisting of:

[0069] the dapA gene which codes for dihydrodipicolinate synthase (EP-B 0 197 335),

[0070] the lysC gene which codes for a feed back resistant aspartate kinase (Kalinowski et al. (1990), Molecular and General Genetics 224: 317-324),

[0071] the gap gene which codes for glyceraldehyde 3-phosphate dehydrogenase (Eikmanns (1992), Journal of Bacteriology 174:6076-6086),

[0072] the pyc gene which codes for pyruvate carboxylase (DE-A-198 31 609),

[0073] the tkt gene which codes for transketolase (accession number AB023377 of the European Molecular Biologies Laboratories databank (EMBL, Heidelberg, Germany)),

[0074] the gnd gene which codes for 6-phosphogluconate dehydrogenase (JP-A-9-224662),

[0075] the lysE gene which codes for the lysine export protein (DE-A-195 48 222),

[0076] the zwal gene (DE 199 59 328.0; DSM 13115),

[0077] the eno gene which codes for enolase (DE 199 47 791.4)

[0078] can be amplified, in particular over-expressed, at the same time. The use of endogenous genes is preferred.

[0079] It may furthermore be advantageous for the production of L-amino acids at the same time to attenuate one of the genes chosen from the group consisting of

[0080] the pck gene which codes for phosphoenol pyruvate carboxykinase (DE 199 50 409.1; DSM 13047),

[0081] the pgi gene which codes for glucose 6-phosphate isomerase (U.S. patent application Ser. No. 09/396,478, DSM 12969),

[0082] the poxB gene which codes for pyruvate oxidase (DE 199 51 975.7; DSM 13114),

[0083] the zwa2 gene (DE: 199 59 327.2; DSM 13113)

[0084] in addition to the amplification of the zwf gene.

[0085] In this connection, the term “attenuation” means reducing or suppressing the intracellular activity or concentration of one or more enzymes or proteins in a microorganism, which enzymes or proteins are coded by the corresponding DNA, for example by using a weak promoter or a gene or allele which codes for a corresponding enzyme or protein which has a low activity or inactivates the corresponding enzyme or protein and optionally by combining these measures.

[0086] By attenuation measures, the activity or concentration of the corresponding enzyme or protein is in general reduced to 0 to 75%, 0 to 50%, 0 to 25%, 0 to 10% or 0 to 5% of the activity or concentration of the wild-type enzyme or protein or of the activity or concentration of the enzyme or protein in the starting microorganism.

[0087] In addition to over-expression of the Zwf protein, it may furthermore be advantageous for the production of L-amino acids to eliminate undesirable side reactions (Nakayama: “Breeding of Amino Acid Producing Micro-organisms”, in: Overproduction of Microbial Products, Krumphanzl, Sikyta, Vanek (eds.), Academic Press, London, UK, 1982).

[0088] The microorganisms prepared according to the invention can be cultured continuously or discontinuously in the batch process (batch culture) or in the fed batch (feed process) or repeated fed batch process (repetitive feed process) for the purpose of L-amino acid production. A summary of known culture methods is described in the textbook by Chmiel (Bioprozesstechnik 1. Einführung in die Bioverfahrenstechnik [Bioprocess Technology 1. Introduction to Bioprocess Technology (Gustav Fischer Verlag, Stuttgart, 1991)) or in the textbook by Storhas (Bioreaktoren und periphere Einrichtungen [Bioreactors and Peripheral Equipment] (Vieweg Verlag, Braunschweig/Wiesbaden, 1994)).

[0089] The culture medium to be used should meet the requirements of the particular microorganisms in a suitable manner. Descriptions of culture media for various microorganisms are contained in the handbook “Manual of Methods for General Bacteriology” of the American Society for Bacteriology (Washington D.C., USA, 1981). Sugars and carbohydrates, such as e.g. glucose, sucrose, lactose, fructose, maltose, molasses, starch and cellulose, oils and fats, such as e.g. soya oil, sunflower oil, groundnut oil and coconut fat, fatty acids, such as e.g. palmitic acid, stearic acid and linoleic acid, alcohols, such as, e.g., glycerol and ethanol, and organic acids, such as e.g. acetic acid, can be used as the source of carbon. These substance can be used individually or as a mixture. Organic nitrogen-containing compounds, such as peptones, yeast extract, meat extract, malt extract, corn steep liquor, soya bean flour and urea, or inorganic compounds, such as ammonium sulfate, ammonium chloride, ammonium phosphate, ammonium carbonate and ammonium nitrate, can be used as the source of nitrogen. The sources of nitrogen can be used individually or as a mixture. Potassium dihydrogen phosphate or dipotassium hydrogen phosphate or the corresponding sodium-containing salts can be used as the source of phosphorus. The culture medium should furthermore comprise salts of metals, such as e.g. magnesium sulfate or iron sulfate, which are necessary for growth. Finally, essential growth substances, such as amino acids and vitamins, can be employed in addition to the above-mentioned substances. Suitable precursors can moreover be added to the culture medium. The starting substances mentioned can be added to the culture in the form of a single batch, or can be fed in during the culture in a suitable manner.

[0090] Basic compounds, such as sodium hydroxide, potassium hydroxide, ammonia, or acid compounds, such as phosphoric acid or sulfuric acid, can be employed in a suitable manner to control the pH. Antifoams, such as e.g. fatty acid polyglycol esters, can be employed to control the development of foam. Suitable substances having a selective action, e.g. antibiotics, can be added to the medium to maintain the stability of plasmids. To maintain aerobic conditions, oxygen or oxygen-containing gas mixtures, such as e.g. air, are introduced into the culture. The temperature of the culture is usually 20° C. to 45° C., and preferably 25° C. to 40° C. Culturing is continued until a maximum of L-amino acid has formed. This target is usually reached within 10 hours to 160 hours.

[0091] The analysis of L-amino acids can be carried out by anion exchange chromatography with subsequent ninhydrin derivation, as described by Spackman et al. (Analytical Chemistry, 30, (1958), 1190), or it can take place by reversed phase HPLC as described by Lindroth et al. (Analytical Chemistry (1979) 51:. 1167-1174).

[0092] The following microorganism has been deposited at the Deutsche Sammlung fur Mikroorganismen und Zellkulturen (DSMZ=German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany) in accordance with the Budapest Treaty: Escherichia coli K-12 DH5α/pEC-T18mob2 as DSM 13244.

[0093] Referring now more particularly to the Figures, in FIGS. 1 and 2, the abbreviations used have the following meanings: Tet: Resistance gene for tetracycline oriV: Plasmid-coded replication origin of E. coli RP4mob: mob region for mobilizing the plasmid rep: Plasmid-coded replication origin from C. glutamicum plasmid pGA1 per: Gene for controlling the number of copies from pGA1 lacZ-alpha: lacZα gene fragment (N-terminus) of the β-galactosidase gene lacZalpha′: 5′-Terminus of the lacZα gene fragment ′lacZalpha: 3′-Terminus of the lacZα gene fragment

[0094] In FIGS. 3 and 4, the abbreviations used have the following meanings: Neo r: Neomycin/kanamycin resistance ColE1 ori: Replication origin of the plasmid ColE1 CMV: Cytomegalovirus promoter lacP: Lactose promoter pgi: Phosphoglucose isomerase gene lacZ: Part of the β-galactosidase gene SV40 3′ splice 3′ splice site of Simian virus 40 SV40 polyA: Polyadenylation site of Simian virus 40 f1(−)ori: Replication origin of the filamentous phage f1 SV40 ori: Replication origin of Simian virus 40 kan r: Kanamycin resistance pgi insert: Internal fragment of the pgi gene ori: Replication origin of the plasmid pBGS8

[0095] In FIG. 5, the abbreviations used have the following meanings: ColE1 ori: Replication origin of the plasmid ColE1 lacZ: Cloning relict of the lacZα gene fragment f1 ori: Replication origin of phage f1 KmR: Kanamycin resistance ApR: Ampicillin resistance poxBint: Internal fragment of the poxB gene.

[0096] The meaning of the abbreviations for the various restriction enzymes (e.g. BamHI, EcoRI etc.)are known from the prior art and are summarized, for example, by Kessler and Holtke (Gene 47, 1-153 (1986)) or Roberts et al. (Nucleic Acids Research 27, 312-313 (1999)).

[0097] The following examples will further illustrate this invention. The molecular biology techniques, e.g. plasmid DNA isolation, restriction enzyme treatment, ligations, standard transformations of Escherichia coli etc. used are, (unless stated otherwise), described by Sambrook et al., (Molecular Cloning. A Laboratory Manual (1989) Cold Spring Harbor Laboratories, USA).

EXAMPLE 1

[0098] Expression of the Zwf Protein

[0099] 1.1 Preparation of the Plasmid pEC-T18mob2

[0100] The E. coli-C. glutamicum shuttle vector pEC-T18mob2 was constructed according to the prior art. The vector contains the replication region rep of the plasmid pGA1 including the replication effector per (U.S. Pat. No. 5,175,108; Nesvera et al., Journal of Bacteriology 179, 1525-1532 (1997)), the tetracycline resistance-imparting tetA(Z) gene of the plasmid pAG1 (U.S. Pat. No. 5,158,891; gene library entry at the National Center for Biotechnology Information (NCBI, Bethesda, Md., USA) with accession number AF121000), the replication region oriV of the plasmid pMB1 (Sutcliffe, Cold Spring Harbor Symposium on Quantitative Biology 43, 77-90 (1979)), the lacZα gene fragment including the lac promoter and a multiple cloning site (mcs) (Norrander et al. Gene 26, 101-106 (1983)) and the mob region of the plasmid RP4 (Simon et al.,(1983) Bio/Technology 1:784-791). The vector constructed was transformed in the E. coli strain DH5α (Brown (ed.) Molecular Biology Labfax, BIOS Scientific Publishers, Oxford, UK, 1991). Selection for plasmid-carrying cells was made by plating out the transformation batch on LB agar (Sambrook et al., Molecular cloning: a laboratory manual. 2^(nd) Ed. Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y.), which had been supplemented with 5 mg/l tetracycline. Plasmid DNA was isolated from a transformant with the aid of the QIAprep Spin Miniprep Kit from Qiagen and checked by restriction with the restriction enzyme EcoRI and HindIII and subsequent agarose gel electrophoresis (0.8%).

[0101] The plasmid was called pEC-T18mob2 and is shown in FIG. 1. It is deposited in the form of the strain Escherichia coli K-12 strain DH5αpEC-T18mob2 at the Deutsche Sammlung für Mikroorganismen und Zellkulturen (DSMZ=German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany) as DSM 13244.

[0102] 1.2 Preparation of the Plasmid pEC-T18mob2zwf

[0103] The gene from Corynebacterium glutamicum ATCC13032 was first amplified by a polymerase chain reaction (PCR) by means of the following oligonucleotide primer: zwf-forward: 5′-TCG ACG CGG TTC TGG AGC AG-3′ (SEQ ID NO:11) zwf-reverse: 5′-CTA AAT TAT GGC CTG CGC CAG-3′. (SEQ ID NO:12)

[0104] The PCR reaction was carried out in 30 cycles in the presence of 200 μM deoxynucleotide triphosphates (dATP, dCTP, dGTP, dTTP), in each case 1 μM of the corresponding oligonucleotide, 100 ng chromosomal DNA from Corynebacterium glutamicum ATCC13032, 1/10 volume 10-fold reaction buffer and 2.6 units of a heat-stable Taq-/Pwo-DNA polymerase mixture (Expand High Fidelity PCR System from Roche Diagnostics, Mannheim, Germany) in a Thermocycler (PTC-100, MJ Research, Inc., Watertown, USA) under the following conditions: 94° C. for 30 seconds, 64° C. for 1 minute and 68° C. for 3 minutes.

[0105] The amplified fragment about 1.8 kb in size was subsequently ligated with the aid of the SureClone Ligation Kit (Amersham Pharmacia Biotech, Uppsala, Sweden) into the SmaI cleavage site of the vector pUC18 in accordance with the manufacturer's instructions. The E. coli strain DH5αmcr (Grant et al., Proceedings of the National Academy of Sciences of the United States of America USA (1990) 87: 4645-4649) was transformed with the entire ligation batch. Transformants were identified with the aid of their carbenicillin resistance on LB-agar plates containing 50 μg/mL carbenicillin. The plasmids were prepared from 7 of the transformants and checked for the presence of the 1.8 kb PCR fragment as an insert by restriction analysis. The recombinant plasmid formed in this way is called pUC18zwf in the following.

[0106] For construction of pEC-T18mob2zwf, pUC18zwf was digested with KpnI and SalI, and the product was isolated with the aid of the NucleoSpin Extraction Kit from Macherey-Nagel (Düren, Germany) in accordance with the manufacturer's instructions and then ligated with the vector pEC-T18mob2, which had also been cleaved with KpnI and SalI and dephosphorylated. The E. coli strain DH5αmcr (Grant et al., Proceedings of the National Academy of Sciences of the United States of America USA (1990) 87: 4645-4649) was transformed with the entire ligation batch. Transformants were identified with the aid of their tetracycline resistance on LB-agar plates containing 5 μg/mL tetracycline. The plasmids were prepared from 12 of the transformants and checked for the presence of the 1.8 kb PCR fragment as an insert by restriction analysis. One of the recombinant plasmids isolated in this manner was called pEC-T18mob2zwf (FIG. 2).

EXAMPLE 2

[0107] Preparation of Amino Acid Producers with an Amplified zwf Gene

[0108] The L-lysine-producing strain Corynebacterium glutamicum DSM5715 is described in EP-B-0435132 and the L-threonine-producing strain Brevibacterium flavum DSM5399 is described in EP-B-0385940. Both strains are deposited at the Deutsche Sammlung für Mikroorganismen und Zellkulturen [German Collection of Microorganisms and Cell Cultures] in Braunschweig (Germany) in accordance with the Budapest Treaty.

[0109] 2.1 Preparation of the Strains DSM5715/pEC-T18mob2zwf and DSM5399/pEC-T18mob2zwf

[0110] The strains DSM5715 and DSM5399 were transformed with the plasmid pEC-T18mob2zwf using the electroporation method described by Liebl et al., (FEMS Microbiology Letters, 53:299-303 (1989)) Selection of the transformants took place on LBHIS agar comprising 18.5 g/l brain-heart infusion broth, 0.5 M sorbitol, 5 g/l Bacto-tryptone, 2.5 g/l Bacto-yeast extract, 5 g/l NaCl and 18 g/l Bacto-agar, which had been supplemented with 5 mg/l tetracycline. Incubation was carried out for 2 days at 33° C.

[0111] Plasmid DNA was isolated in each case from a transformant by conventional methods (Peters-Wendisch et al., 1998, Microbiology 144, 915-927), cleaved with the restriction endonucleases XbaI and KpnI, and the plasmid was checked by subsequent agarose gel electrophoresis. The strains obtained in this way were called DSM5715/pEC-T18mob2zwf and DSM5399/pEC-T18mob2zwf.

[0112] 2.2 Preparation of L-Threonine

[0113] The C. glutamicum strain DSM5399/pEC-T18mob2zwf obtained in Example 2.1 was cultured in a nutrient medium suitable for the production of threonine and the threonine content in the culture supernatant was determined. For this, the strain was first incubated on an agar plate with the corresponding antibiotic (brain-heart agar with tetracycline (5 mg/l)) for 24 hours at 33° C. Starting from this agar plate culture, a preculture was seeded (10 ml medium in a 100 ml conical flask). The complete medium Cg III was used as the medium for the preculture. Medium Cg III NaCl 2.5 g/l Bacto-Peptone 10 g/l Bacto-Yeast extract 10 g/l Glucose (autoclaved separately) 2% (w/v) The pH was brought to pH 7.4

[0114] Tetracycline (5 mg/l) was added to this. The preculture was incubated for 16 hours at 33° C. at 240 rpm on a shaking machine. A main culture was seeded from this preculture such that the initial OD (660 nm) of the main culture was 0.1. Medium MM was used for the main culture. Medium MM CSL (corn steep liquor) 5 g/l MOPS (morpholinopropanesulfonic acid) 20 g/l Glucose (autoclaved separately) 50 g/l (NH₄)₂SO₄ 25 g/l KH₂PO₄ 0.1 g/l MgSO₄ * 7H₂O 1.0 g/l CaCl₂ * 2 H₂O 10 mg/l FeSO₄ * 7 H₂O 10 mg/l MnSO₄ * H₂O 5.0 mg/l Biotin (sterile-filtered) 0.3 mg/l Thiamine * HCl (sterile-filtered) 0.2 mg/l L-Leucine (sterile-filtered) 0.1 g/l CaCO₃ 25 g/l

[0115] The CSL, MOPS and the salt solution were brought to pH 7 with aqueous ammonia and autoclaved. The sterile substrate and vitamin solutions were then added, as well as the CaCO₃ autoclaved in the dry state. Culturing is carried out in a 10 ml volume in a 100 ml conical flask with baffles. Tetracycline (5 mg/l) was added. Culturing was carried out at 33° C. and 80% atmospheric humidity.

[0116] After 72 hours, the OD was determined at a measurement wavelength of 660 nm with a Biomek 1000 (Beckmann Instruments GmbH, Munich). The amount of threonine formed was determined with an amino acid analyzer from Eppendorf-BioTronik (Hamburg, Germany) by ion exchange chromatography and post-column derivation with ninhydrin detection. The result of the experiment is shown in Table 1. TABLE 1 OD L-Threonin Strain (660 nm) g/l DSM5399 12.3 0.74 DSM5399/pEC-T18mob2zwf 10.2 1.0 

[0117] 2.3 Preparation of L-Lysine

[0118] The C. glutamicum strain DSM5715/pEC-T18mob2zwf obtained in Example 2.1 was cultured in a nutrient medium suitable for the production of lysine and the lysine content in the culture supernatant was determined. For this, the strain was first incubated on an agar plate with the corresponding antibiotic (brain-heart agar with tetracycline (5 mg/l)) for 24 hours at 33° C. Starting from this agar plate culture, a preculture was seeded (10 ml medium in a 100 ml conical flask). The complete medium Cg III was used as the medium for the preculture. Medium Cg III NaCl 2.5 g/l Bacto-Peptone 10 g/l Bacto-Yeast extract 10 g/l Glucose (autoclaved separately) 2% (w/v) The pH was brought to pH 7.4

[0119] Tetracycline (5 mg/l) was added to this. The preculture was incubated for 16 hours at 33° C. at 240 rpm on a shaking machine. A main culture was seeded from this preculture such that the initial OD (660 nm) of the main culture was 0.1. Medium MM was used for the main culture. Medium MM CSL (corn steep liquor) 5 g/l MOPS (morpholinopropanesulfonic acid) 20 g/l Glucose (autoclaved separately) 58 g/l (NH₄)₂SO₄ 25 g/l KH₂PO₄ 0.1 g/l MgSO₄ * 7 H₂O 1.0 g/l CaCl₂ * 2H₂O 10 mg/l FeSO₄ * 7 H₂O 10 mg/l MnSO₄ * H₂O 5.0 mg/l Biotin (sterile-filtered) 0.3 mg/l Thiamine * HCl (sterile-filtered) 0.2 mg/l L-Leucine (sterile-filtered) 0.1 g/l CaCO₃ 25 g/l

[0120] The CSL, MOPS and the salt solution were brought to pH 7 with aqueous ammonia and autoclaved. The sterile substrate and vitamin solutions were then added, as well as the CaCO₃ autoclaved in the dry state. Culturing is carried out in a 10 ml volume in a 100 ml conical flask with baffles. Tetracycline (5 mg/l) was added. Culturing was carried out at 33° C. and 80% atmospheric humidity. After 72 hours, the OD was determined at a measurement wavelength of 660 nm with a Biomek 1000 (Beckmann Instruments GmbH, Munich). The amount of lysine formed was determined with an amino acid analyzer from Eppendorf-BioTronik (Hamburg, Germany) by ion exchange chromatography and post-column derivation with ninhydrin detection. The result of the experiment is shown in Table 2. TABLE 2 OD L-Lysine HCl Strain (660 nm) g/l DSM5715 10.8 16.0 DSM5715/pEC-T18mob2zwf  7.2 17.1

EXAMPLE 3

[0121] Construction of a Gene Library of Corynebacterium glutamicum Strain AS019

[0122] A DNA library of Corynebacterium glutamicum strain ASO19 (Yoshihama et al., Journal of Bacteriology 162, 591-597 (1985)) was constructed using λ Zap Expres™ system, (Short et al., (1988) Nucleic Acids Research, 16: 7583-7600), as described by O'Donohue (O'Donohue, M. (1997). The Cloning and Molecular Analysis of Four Common Aromatic Amino Acid Biosynthetic Genes from Corynebacterium glutamicum. Ph.D. Thesis, National University of Ireland, Galway). λ Zap Express™ kit was purchased from Stratagene (Stratagene, 11011 North Torrey Pines Rd., La Jolla, Calif. 92037) and used according to the manufacturers instructions. AS019-DNA was digested with restriction enzyme Sau3A and ligated to BamHI treated and dephosphorylated λ Zap Express™ arms.

EXAMPLE 4

[0123] Cloning and Sequencing of the pgi Gene

[0124] 1. Cloning

[0125]Escherichia coli strain DF1311, carrying mutations in the pgi and pgl genes as described by Kupor and Fraenkel, (Journal of Bacteriology 100: 1296-1301 (1969)), was transformed with approx. 500 ng of the AS019 λ Zap Express™ plasmid library described in Example 3. Selection for transformants was made on M9 minimal media, (Sambrook et al., (1989). Molecular Cloning. A Laboratory Manual Cold Spring Harbor Laboratories, USA), containing kanamycin at a concentration of 50 mg/l and incubation at 37° C. for 48 hours. Plasmid DNA was isolated from one transformant according to Birnboim and Doly (Nucleic Acids Research 7: 1513-1523 (1979)) and designated pAMC1 (FIG. 3).

[0126] 2. Sequencing

[0127] For sequence analysis of the cloned insert of pAMC1 the method of Sanger et al. (Proceedings of the National Academy of Sciences USA 74,5463-5467 (1977)) was applied using primers differentially labeled with a colored fluorescent tag. It was carried out using the ABI prism 310 genetic analyzer from Perkin Elmer Applied Biosystems, (Perkin Elmer Corporation, Norwalk, Conn., U.S.A), and the ABI prism Big Dye™ Terminator Cycle Sequencing Ready Reaction kit also from Perkin Elmer.

[0128] Initial sequence analysis was carried out using the universal forward and M13 reverse primers obtained from Pharmacia Biotech (St. Albans, Herts, AL1 3AW, UK): Universal forward primer: GTA ATA CGA CTC ACT ATA GGG C (SEQ ID NO:13) M13 reverse primer: GGA AAC AGC TAT GAC CAT G. (SEQ ID NO:14)

[0129] Internal primers were subsequently designed from the sequence obtained which allowed the entire pgi gene to be deduced. The sequence of the internal primers is as follows: Internal primer 1: GGA AAC AGG GGA GCC GTC (SEQ ID NO:15) Internal primer 2: TGC TGA GAT ACC AGC GGT. (SEQ ID NO:16)

[0130] The sequence obtained was then analyzed using the DNA Strider program, (Marck, (1988). Nucleic Acids Research 16: 1829-1836), version 1.0 on an Apple Macintosh computer. This program allowed for analyses such as restriction site usage, open reading frame analysis and codon usage determination. Searches between DNA sequence obtained and those in EMBL and Genbank databases were achieved using the BLAST program, (Altschul et al., (1997). Nucleic Acids Research, 25: 3389-3402). DNA and protein sequences were aligned using the Clustal V and Clustal W programs (Higgins and Sharp, 1988 Gene 73: 237-244).

[0131] The sequence thus obtained is shown in SEQ ID NO: 1. The analysis of the nucleotide sequence obtained revealed an open reading frame of 1650 base pairs which was designated as pgi gene. It codes for a protein of 550 amino acids shown in SEQ ID NO: 2.

EXAMPLE 5

[0132] Preparation of an Integration Vector for Integration Mutagenesis of the pgi Gene

[0133] An internal segment of the pgi gene was amplified by polymerase chain reaction (PCR) using genomic DNA isolated from Corynebacterium glutamicum AS019, (Heery and Dunican, (1993) Applied and Environmental Microbiology 59: 791-799), as template. The pgi primers used were: fwd. ATG GAR WCC AAY GGH AA (SEQ ID NO:17) Primer: rev. YTC CAC GCC CCA YTG RTC (SEQ ID NO:18) Primer:

[0134] with R=A+G; Y=C+T; W=A+T; H=A+T+C. PCR Parameters were as follows:  35 cycles  94° C. for 1 min.  47° C. for 1 min.  72° C. for 30 sec. 1.5 mM MgCl₂ approx. 150-200 ng DNA template.

[0135] The PCR product obtained was cloned into the commercially available pGEM-T vector received from Promega Corp., (Promega UK, Southampton.) using strain E. coli JM109, (Yanisch-Perron et al., 1985. Gene, 33: 103-119), as a host. The sequence of the PCR product is shown as SEQ ID NO: 3. The cloned insert was then excised as an EcoRI fragment and ligated to plasmid pBGS8 (Spratt et al., Gene 41: 337-342 (1986)) pretreated with EcoRI. The restriction enzymes used were obtained from Boehringer Mannheim UK Ltd., (Bell Lane, Lewes East Sussex BN7 1LG, UK.) and used according to manufacturers instructions. E. coli JM109 was then transformed with this ligation mixture and electrotransformants were selected on Luria agar supplemented with IPTG (isopropyl-β-D-thiogalactopyranoside), XGAL (5-bromo-4-chloro-3-indolyl-D-galactopyranoside) and kanamycin at a concentration of 1 mM, 0.02% and 50 mg/l respectively. Agar plates were incubated for twelve hours at 37° C. Plasmid DNA was isolated from one transformant, characterized by restriction enzyme analysis using EcoRI, BamHI and SalI designated pMC1 (FIG. 4).

[0136] Plasmid pMC1 was deposited in the form of Escherichia coli strain DH5α/pMC1 at the Deutsche Sammlung für Mikroorganismen und Zellkulturen (DSMZ, Braunschweig, Germany) as DSM 12969 according to the Budapest treaty.

EXAMPLE 6

[0137] Integration Mutagenesis of the pgi Gene in the Lysine Producer DSM 5715

[0138] The vector pMC1 mentioned in Example 5 was electroporated by the electroporation method of Tauch et al.(FEMS Microbiological Letters, 123:343-347 (1994)) in Corynebacterium glutamicum DSM 5715. Strain DSM 5715 is an AEC-resistant lysine producer. The vector pMC1 cannot replicate independently in DSM5715 and is retained in the cell only if it has integrated into the chromosome of DSM 5715. Selection of clones with pMC1 integrated into the chromosome was carried out by plating out the electroporation batch on LB agar (Sambrook et al., Molecular cloning: a laboratory manual. 2^(nd) Ed. Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y.), which had been supplemented with 15 mg/l kanamycin. For detection of the integration, the internal pgi fragment (Example 5) was labeled with the Dig hybridization kit from Boehringer Mannheim by the method of “The DIG System Users Guide for Filter Hybridization” of Boehringer Mannheim GmbH (Mannheim, Germany, 1993). Chromosomal DNA of a transformant was isolated by the method of Eikmanns et al. (Microbiology 140: 1817-1828 (1994)) and in each case cleaved with the restriction enzymes SalI, SacI and HindIII. The fragments formed were separated by agarose gel electrophoresis and hybridized at 68° C. with the Dig hybridization kit from Boehringer. It was found in this way that the plasmid pMC1 was inserted within the chromosomal pgi gene of strain DSM5715. The strain was called DSM5715::pMC1.

EXAMPLE 7

[0139] Effect of Over-Expression of the zwf Gene with Simultaneous Elimination of the pgi Gene on the Preparation of Lysine

[0140] 7.1 Preparation of the Strain DSM5715::pMC1/pEC-T18mob2zwf

[0141] The vector pEC-T18mob2zwf mentioned in Example 1.2 was electroporated by the electroporation method of Tauch et al. (1994, FEMS Microbiological Letters, 123:343-347) in Corynebacterium glutamicum DSM 5715::pMC1. Selection for plasmid-carrying cells was made by plating out the electroporation batch on LB agar (Sambrook et al., Molecular cloning: a laboratory manual. 2^(nd) Ed. Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y., 1989), which had been supplemented with 15 mg/l kanamycin and with 5 mg/l tetracycline. Plasmid DNA was isolated from a transformant by conventional methods (Peters-Wendisch et al., 1998, Microbiology 144, 915-927) and checked by treatment with the restriction enzymes KpnI and SalI with subsequent agarose gel electrophoresis. The strain was called DSM5715::pMC1/pEC-T18mob2zwf.

[0142] 7.2 Preparation of Lysine

[0143] The C. glutamicum strain DSM5715::pMC1/pEC-T18mob2zwf obtained in Example 7.1 was cultured in a nutrient medium suitable for the production of lysine and the lysine content in the culture supernatant was determined. For this, the strain was first incubated on an agar plate with the corresponding antibiotic (brain-heart agar with tetracycline (5 mg/l) and kanamycin (25 mg/l)) for 24 hours at 33° C. The cultures of the comparison strains were supplemented according to their resistance to antibiotics. Starting from this agar plate culture, a preculture was seeded (10 ml medium in a 100 ml conical flask). The complete medium Cg III was used as the medium for the preculture. Medium Cg III NaCl 2.5 g/l Bacto-Peptone 10 g/l Bacto-Yeast extract 10 g/l Glucose (autoclaved separately) 2% (w/v) The pH was brought to pH 7.4

[0144] Tetracycline (5 mg/l) and kanamycin (5 mg/l) was added to this. The preculture was incubated for 16 hours at 33° C. at 240 rpm on a shaking machine. A main culture was seeded from this preculture such that the initial OD (660 nm) of the main culture was 0.1. Medium MM was used for the main culture. Medium MM CSL (corn steep liquor) 5 g/l MOPS (morpholinopropanesulfonic acid) 20 g/l Glucose (autoclaved separately) 50 g/l (NH₄)₂SO₄ 25 g/l KH₂PO₄ 0.1 g/l MgSO₄ * 7 H₂O 1.0 g/l CaCl₂ * 2 H₂O 10 mg/l FeSO₄ * 7 H₂O 10 mg/l MnSO₄ * H₂O 5.0 mg/l Biotin (sterile-filtered) 0.3 mg/l Thiamine * HCl (sterile-filtered) 0.2 mg/l L-Leucine (sterile-filtered) 0.1 g/l CaCO₃ 25 g/l

[0145] The CSL, MOPS and the salt solution were brought to pH 7 with aqueous ammonia and autoclaved. The sterile substrate and vitamin solutions were then added, as well as the CaCO₃ autoclaved in the dry state. Culturing is carried out in a 10 ml volume in a 100 ml conical flask with baffles. Tetracycline (5 mg/l) and kanamycin (25 mg/l) were added. Culturing was carried out at 33° C. and 80% atmospheric humidity.

[0146] After 72 hours, the OD was determined at a measurement wavelength of 660 nm with a Biomek 1000 (Beckmann Instruments GmbH, Munich). The amount of lysine formed was determined with an amino acid analyzer from Eppendorf-BioTronik (Hamburg, Germany) by ion exchange chromatography and post-column derivation with ninhydrin detection. The result of the experiment is shown in Table 3. TABLE 3 OD L-Lysine HCl Strain (660 nm) g/l DSM5715 7.3 14.3 DSM5715/pEC-T18mob2zwf 7.1 14.6 DSM5715::pMC1/ 10.4 15.2 pECTmob2zwf

EXAMPLE 8

[0147] Preparation of a Genomic Cosmid Gene Library from Corynebacterium glutamicum ATCC 13032

[0148] Chromosomal DNA from Corynebacterium glutamicum ATCC 13032 was isolated as described by Tauch et al., (1995, Plasmid 33:168-179), and partly cleaved with the restriction enzyme Sau3AI (Amersham Pharmacia, Freiburg, Germany, Product Description Sau3AI, Code no. 27-0913-02). The DNA fragments were dephosphorylated with shrimp alkaline phosphatase (Roche Molecular Biochemicals, Mannheim, Germany, Product Description SAP, Code no. 1758250). The DNA of the cosmid vector SuperCos1 (Wahl et al. (1987) Proceedings of the National Academy of Sciences USA 84:2160-2164), obtained from Stratagene (La Jolla, USA, Product Description SuperCos1 Cosmid Vektor Kit, Code no. 251301) was cleaved with the restriction enzyme XbaI (Amersham Pharmacia, Freiburg, Germany, Product Description XbaI, Code no. 27-0948-02) and likewise dephosphorylated with shrimp alkaline phosphatase. The cosmid DNA was then cleaved with the restriction enzyme BamHI (Amersham Pharmacia, Freiburg, Germany, Product Description BamHI, Code no. 27-0868-04). The cosmid DNA treated in this manner was mixed with the treated ATCC13032 DNA and the batch was treated with T4 DNA ligase (Amersham Pharmacia, Freiburg, Germany, Product Description T4-DNA-Ligase, Code no.27-0870-04). The ligation mixture was then packed in phages with the aid of Gigapack II XL Packing Extracts (Stratagene, La Jolla, USA, Product Description Gigapack II XL Packing Extract, Code no. 200217). For infection of the E. coli strain NM554 (Raleigh et al. 1988, Nucleic Acid Res. 16:1563-1575) the cells were taken up in 10 mM MgSO₄ and mixed with an aliquot of the phage suspension. The infection and titering of the cosmid library were carried out as described by Sambrook et al. (1989, Molecular Cloning: A laboratory Manual, Cold Spring Harbor), the cells being plated out on LB agar (Lennox, 1955, Virology, 1:190)+100 μg/ml ampicillin. After incubation overnight at 37° C., recombinant individual clones were selected.

EXAMPLE 9

[0149] Isolation and Sequencing of the poxB Gene

[0150] The cosmid DNA of an individual colony (Example 7) was isolated with the Qiaprep Spin Miniprep Kit (Product No. 27106, Qiagen, Hilden, Germany) in accordance with the manufacturer'3s instructions and partly cleaved with the restriction enzyme Sau3AI (Amersham Pharmacia, Freiburg, Germany, Product Description Sau3AI, Product No. 27-0913-02). The DNA fragments were dephosphorylated with shrimp alkaline phosphatase (Roche Molecular Biochemicals, Mannheim, Germany, Product Description SAP, Product No. 1758250). After separation by gel electrophoresis, the cosmid fragments in the size range of 1500 to 2000 bp were isolated with the QiaExII Gel Extraction Kit (Product No. 20021, Qiagen, Hilden, Germany). The DNA of the sequencing vector pZero-1, obtained from Invitrogen (Groningen, Holland, Product Description Zero Background Cloning Kit, Product No. K2500-01), was cleaved with the restriction enzyme BamHI (Amersham Pharmacia, Freiburg, Germany, Product Description BamHI, Product No. 27-0868-04). The ligation of the cosmid fragments in the sequencing vector pZero-1 was carried out as described by Sambrook et al. (1989, Molecular Cloning: A laboratory Manual, Cold Spring Harbor), the DNA mixture being incubated overnight with T4 ligase (Pharmacia Biotech, Freiburg, Germany). This ligation mixture was then electroporated (Tauch et al. 1994, FEMS Microbiol Letters, 123:343-7) into the E. coli strain DH5αMCR (Grant, 1990, Proceedings of the National Academy of Sciences U.S.A., 87:4645-4649) and plated out on LB agar (Lennox, 1955, Virology, 1:190) with 50 μg/ml zeocin. The plasmid preparation of the recombinant clones was carried out with Biorobot 9600 (Product No. 900200, Qiagen, Hilden, Germany). The sequencing was carried out by the dideoxy chain-stopping method of Sanger et al. (1977, Proceedings of the National Academies of Sciences U.S.A., 74:5463-5467) with modifications according to Zimmermann et al. (1990, Nucleic Acids Research, 18:1067). The “RR dRhodamin Terminator Cycle Sequencing Kit” from PE Applied Biosystems(Product No. 403044, Weiterstadt, Germany) was used. The separation by gel electrophoresis and analysis of the sequencing reaction were carried out in a “Rotiphoresis NF Acrylamide/Bisacrylamide” Gel (29:1) (Product No. A124.1, Roth, Karlsruhe, Germany) with the “ABI Prism 377” sequencer from PE Applied Biosystems (Weiterstadt, Germany).

[0151] The raw sequence data obtained were then processed using the Staden program package (1986, Nucleic Acids Research, 14:217-231) version 97-0. The individual sequences of the pZero1 derivatives were assembled to a continuous contig. The computer-assisted coding region analysis were prepared with the XNIP program (Staden, 1986, Nucleic Acids Research, 14:217-231). Further analyses were carried out with the “BLAST search program” (Altschul et al., 1997, Nucleic Acids Research, 25:3389-3402), against the non-redundant databank of the “National Center for Biotechnology Information” (NCBI, Bethesda, Md., USA).

[0152] The resulting nucleotide sequence is shown in SEQ ID NO: 4. Analysis of the nucleotide sequence showed an open reading frame of 1737 base pairs, which was called the poxB gene. The poxB gene codes for a polypeptide of 579 amino acids (SEQ ID NO: 5).

EXAMPLE 10

[0153] Preparation of an Integration Vector for Integration Mutagenesis of the poxB Gene

[0154] From the strain ATCC 13032, chromosomal DNA was isolated by the method of Eikmanns et al. (Microbiology 140: 1817-1828 (1994)). On the basis of the sequence of the poxB gene known for C. glutamicum from Example 8, the following oligonucleotides were chosen for the polymerase chain reaction: poxBint1: 5′ TGC GAG ATG GTG AAT GGT GG 3′ (SEQ ID NO:19) poxBint2: 5′ GCA TGA GGC AAC GCA TTA GC 3′ (SEQ ID NO:20)

[0155] The primers shown were synthesized by MWG Biotech (Ebersberg, Germany) and the PCR reaction was carried out by the standard PCR method of Innis et al. (PCR protocols. A guide to methods and applications, 1990, Academic Press) with Pwo-Polymerase from Boehringer. With the aid of the polymerase chain reaction, a DNA fragment approx. 0.9 kb in size was isolated, this carrying an internal fragment of the poxB gene and being shown in SEQ ID NO: 6.

[0156] The amplified DNA fragment was ligated with the TOPO TA Cloning Kit from Invitrogen Corporation (Carlsbad, Calif., USA; Catalogue Number K4500-01) in the vector pCR2.1-TOPO (Mead at al. (1991) Bio/Technology 9:657-663). The E. coli strain DH5α: was then electroporated with the ligation batch (Hanahan, In: DNA cloning. A Practical Approach. Vol. I, IRL-Press, Oxford, Washington DC, USA, 1985). Selection for plasmid-carrying cells was made by plating out the transformation batch on LB agar (Sambrook et al., Molecular cloning: a laboratory manual. 2^(nd) Ed. Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y., 1989), which had been supplemented with 25 mg/l kanamycin. Plasmid DNA was isolated from a transformant with the aid of the QIAprep Spin Miniprep Kit from Qiagen and checked by restriction with the restriction enzyme EcoRI and subsequent agarose gel electrophoresis (0.8%). The plasmid was called pCR2.1poxBint (FIG. 5).

[0157] Plasmid pCR2.1poxBint has been deposited in the form of the strain Escherichia coli DH5α/pCR2.1poxBint as DSM 13114 at the Deutsche Sammlung für Mikroorganismen und Zellkulturen (DSMZ=German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany) in accordance with the Budapest Treaty.

EXAMPLE 11

[0158] Integration Mutagenesis of the poxB Gene in the Lysine Producer DSM 5715

[0159] The vector pCR2.1poxBint mentioned in Example 10 was electroporated by the electroporation method of Tauch et al.(FEMS Microbiological Letters, 123:343-347 (1994)) in Corynebacterium glutamicum DSM 5715. Strain DSM 5715 is an AEC-resistant lysine producer. The vector pCR2.1poxBint cannot replicate independently in DSM5715 and is retained in the cell only if it has integrated into the chromosome of DSM 5715. Selection of clones with pCR2.1poxBint integrated into the chromosome was carried out by plating out the electroporation batch on LB agar (Sambrook et al., Molecular cloning: a laboratory manual. 2^(nd) Ed. Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y.), which had been supplemented with 15 mg/l kanamycin. For detection of the integration, the poxBint fragment was labeled with the Dig hybridization kit from Boehringer by the method of “The DIG System Users Guide for Filter Hybridization” of Boehringer Mannheim GmbH (Mannheim, Germany, 1993). Chromosomal DNA of a potential integrant was isolated by the method of Eikmanns et al. (Microbiology 140: 1817-1828 (1994)) and in each case cleaved with the restriction enzymes SalI, SacI and HindIII. The fragments formed were separated by agarose gel electrophoresis and hybridized at 68° C. with the Dig hybridization kit from Boehringer. The plasmid pCR2.1poxBint mentioned in Example 9 had been inserted into the chromosome of DSM5715 within the chromosomal poxB gene. The strain was called DSM5715::pCR2.1poxBint.

EXAMPLE 12

[0160] Effect of Over-Expression of the zwf Gene with Simultaneous Elimination of the poxB Gene on the Preparation of Lysine

[0161] 12.1 Preparation of the Strain DSM5715::pCR2.1poxBint/pEC-T18mob2zwf

[0162] The strain DSM5715::pCR2.1poxBint was transformed with the plasmid pEC-T18mob2zwf using the electroporation method described by Liebl et al., (FEMS Microbiology Letters, 53:299-303 (1989)). Selection of the transformants took place on LBHIS agar comprising 18.5 g/l brain-heart infusion broth, 0.5 M sorbitol, 5 g/l Bacto-tryptone, 2.5 g/l Bacto-yeast extract, 5 g/l NaCl and 18 g/l Bacto-agar, which had been supplemented with 5 mg/l tetracycline and 25 mg/l kanamycin. Incubation was carried out for 2 days at 33° C.

[0163] Plasmid DNA was isolated in each case from a transformant by conventional methods (Peters-Wendisch et al., 1998, Microbiology 144, 915-927), cleaved with the restriction endonucleases XbaI and KpnI, and the plasmid was checked by subsequent agarose gel electrophoresis. The strain obtained in this way was called DSM5715:pCR2.1poxBint/pEC-T18mob2zwf.

[0164] 12.2 Preparation of L-Lysine

[0165] The C. glutamicum strain DSM5715::pCR2.1poxBint/pEC-T18mob2zwf obtained in Example 12.1 was cultured in a nutrient medium suitable for the production of lysine and the lysine content in the culture supernatant was determined. For this, the strain was first incubated on an agar plate with the corresponding antibiotic (brain-heart agar with tetracycline (5 mg/l) and kanamycin (25 mg/i)) for 24 hours at 33° C. The comparison strains were supplemented according to their resistance to antibiotics. Starting from this agar plate culture, a preculture was seeded (10 ml medium in a 100 ml conical flask). The complete medium Cg III was used as the medium for the preculture. Medium Cg III NaCl 2.5 g/l Bacto-Peptone 10 g/l Bacto-Yeast extract 10 g/l Glucose (autoclaved separately) 2% (w/v) The pH was brought to pH 7.4

[0166] Tetracycline (5 mg/l) and kanamycin (25 mg/l) were added to this. The preculture was incubated for 16 hours at 33° C. at 240 rpm on a shaking machine. A main culture was seeded from this preculture such that the initial OD (660 nm) of the main culture was 0.1. Medium MM was used for the main culture. Medium MM CSL (corn steep liquor) 5 g/l MOPS (morpholinopropanesulfonic acid) 20 g/l Glucose (autoclaved separately) 58 g/l (NH₄)₂SO₄ 25 g/l KH₂PO₄ 0.1 g/l MgSO₄ * 7 H₂O 1.0 g/l CaCl₂ * 2 H₂O 10 mg/l FeSO₄ * 7 H₂O 10 mg/l MnSO₄ * H₂O 5.0 mg/l Biotin (sterile-filtered) 0.3 mg/l Thiamine * HCl (sterile-filtered) 0.2 mg/l L-Leucine (sterile-filtered) 0.1 g/l CaCO₃ 25 g/l

[0167] The CSL, MOPS and the salt solution were brought to pH 7 with aqueous ammonia and autoclaved. The sterile substrate and vitamin solutions were then added, as well as the CaCO₃ autoclaved in the dry state. Culturing is carried out in a 10 ml volume in a 100 ml conical flask with baffles. Tetracycline (5 mg/l) and kanamycin (25 mg/l) were added. Culturing was carried out at 33° C. and 80% atmospheric humidity.

[0168] After 72 hours, the OD was determined at a measurement wavelength of 660 nm with a Biomek 1000 (Beckmann Instruments GmbH, Munich). The amount of lysine formed was determined with an amino acid analyzer from Eppendorf-BioTronik (Hamburg, Germany) by ion exchange chromatography and post-column derivation with ninhydrin detection. The result of the experiment is shown in Table 4. TABLE 4 OD L-Lysine HCl Strain (660 nm) g/l DSM5715 10.8 16.0 DSM5715/pEC-T18mob2zwf 8.3 17.1 DSM5715::pCR2.1poxBint 7.1 16.7 DSM5715::pCR2.1poxBint/ 7.8 17.7 pEC-Tmob2zwf

[0169]

1 20 1 2811 DNA Corynebacterium glutamicum CDS (373)..(2022) pgi 1 aaaacccgag gggcgaaaat tccaccctaa cttttttggg atcccctttt tccggggaat 60 taattggttt gggtttcaat gggaaaacgg gaaacaatgg gccaaaggtt caaaaacccc 120 aaaagggggc cgggttcaaa ttcccaaaaa aaatggcaaa aaaggggggg ccaaaaccaa 180 gttggccccc aaaccaccgg ggcaacggcc cacccacaaa ggggttgggt taaaggaagg 240 acgcccaaag taagcccgga atggcccacg ttcgaaaaag caggccccaa ttaaacgcac 300 cttaaatttg tcgtgtttcc cactttgaac actcttcgat gcgcttggcc acaaaagcaa 360 gctaacctga ag atg tta ttt aac gac aat aaa gga gtt ttc atg gcg gac 411 Met Leu Phe Asn Asp Asn Lys Gly Val Phe Met Ala Asp 1 5 10 att tcg acc acc cag gtt tgg caa gac ctg acc gat cat tac tca aac 459 Ile Ser Thr Thr Gln Val Trp Gln Asp Leu Thr Asp His Tyr Ser Asn 15 20 25 ttc cag gca acc act ctg cgt gaa ctt ttc aag gaa gaa aac cgc gcc 507 Phe Gln Ala Thr Thr Leu Arg Glu Leu Phe Lys Glu Glu Asn Arg Ala 30 35 40 45 gag aag tac acc ttc tcc gcg gct ggc ctc cac gtc gac ctg tcg aag 555 Glu Lys Tyr Thr Phe Ser Ala Ala Gly Leu His Val Asp Leu Ser Lys 50 55 60 aat ctg ctt gac gac gcc acc ctc acc aag ctc ctt gca ctg acc gaa 603 Asn Leu Leu Asp Asp Ala Thr Leu Thr Lys Leu Leu Ala Leu Thr Glu 65 70 75 gaa tct ggc ctt cgc gaa cgc att gac gcg atg ttt gcc ggt gaa cac 651 Glu Ser Gly Leu Arg Glu Arg Ile Asp Ala Met Phe Ala Gly Glu His 80 85 90 ctc aac aac acc gaa gac cgc gct gtc ctc cac acc gcg ctg cgc ctt 699 Leu Asn Asn Thr Glu Asp Arg Ala Val Leu His Thr Ala Leu Arg Leu 95 100 105 cct gcc gaa gct gat ctg tca gta gat ggc caa gat gtt gct gct gat 747 Pro Ala Glu Ala Asp Leu Ser Val Asp Gly Gln Asp Val Ala Ala Asp 110 115 120 125 gtc cac gaa gtt ttg gga cgc atg cgt gac ttc gct act gcg ctg cgc 795 Val His Glu Val Leu Gly Arg Met Arg Asp Phe Ala Thr Ala Leu Arg 130 135 140 tca ggc aac tgg ttg gga cac acc ggc cac acg atc aag aag atc gtc 843 Ser Gly Asn Trp Leu Gly His Thr Gly His Thr Ile Lys Lys Ile Val 145 150 155 aac att ggt atc ggt ggc tct gac ctc gga cca gcc atg gct acg aag 891 Asn Ile Gly Ile Gly Gly Ser Asp Leu Gly Pro Ala Met Ala Thr Lys 160 165 170 gct ctg cgt gca tac gcg acc gct ggt atc tca gca gaa ttc gtc tcc 939 Ala Leu Arg Ala Tyr Ala Thr Ala Gly Ile Ser Ala Glu Phe Val Ser 175 180 185 aac gtc gac cca gca gac ctc gtt tct gtg ttg gaa gac ctc gat gca 987 Asn Val Asp Pro Ala Asp Leu Val Ser Val Leu Glu Asp Leu Asp Ala 190 195 200 205 gaa tcc aca ttg ttc gtg atc gct tcg aaa act ttc acc acc cag gag 1035 Glu Ser Thr Leu Phe Val Ile Ala Ser Lys Thr Phe Thr Thr Gln Glu 210 215 220 acg ctg tcc aac gct cgt gca gct cgt gct tgg ctg gta gag aag ctc 1083 Thr Leu Ser Asn Ala Arg Ala Ala Arg Ala Trp Leu Val Glu Lys Leu 225 230 235 ggt gaa gag gct gtc gcg aag cac ttc gtc gca gtg tcc acc aat gct 1131 Gly Glu Glu Ala Val Ala Lys His Phe Val Ala Val Ser Thr Asn Ala 240 245 250 gaa aag gtc gca gag ttc ggt atc gac acg gac aac atg ttc ggc ttc 1179 Glu Lys Val Ala Glu Phe Gly Ile Asp Thr Asp Asn Met Phe Gly Phe 255 260 265 tgg gac tgg gtc gga ggt cgt tac tcc gtg gac tcc gca gtt ggt ctt 1227 Trp Asp Trp Val Gly Gly Arg Tyr Ser Val Asp Ser Ala Val Gly Leu 270 275 280 285 tcc ctc atg gca gtg atc ggc cct cgc gac ttc atg cgt ttc ctc ggt 1275 Ser Leu Met Ala Val Ile Gly Pro Arg Asp Phe Met Arg Phe Leu Gly 290 295 300 gga ttc cac gcg atg gat gaa cac ttc cgc acc acc aag ttc gaa gag 1323 Gly Phe His Ala Met Asp Glu His Phe Arg Thr Thr Lys Phe Glu Glu 305 310 315 aac gtt cca atc ttg atg gct ctg ctc ggt gtc tgg tac tcc gat ttc 1371 Asn Val Pro Ile Leu Met Ala Leu Leu Gly Val Trp Tyr Ser Asp Phe 320 325 330 tat ggt gca gaa acc cac gct gtc cta cct tat tcc gag gat ctc agc 1419 Tyr Gly Ala Glu Thr His Ala Val Leu Pro Tyr Ser Glu Asp Leu Ser 335 340 345 cgt ttt gct gct tac ctc cag cag ctg acc atg gag acc aat ggc aag 1467 Arg Phe Ala Ala Tyr Leu Gln Gln Leu Thr Met Glu Thr Asn Gly Lys 350 355 360 365 tca gtc cac cgc gac ggc tcc cct gtt tcc act ggc act ggc gaa att 1515 Ser Val His Arg Asp Gly Ser Pro Val Ser Thr Gly Thr Gly Glu Ile 370 375 380 tac tgg ggt gag cct ggc aca aat ggc cag cac gct ttc ttc cag ctg 1563 Tyr Trp Gly Glu Pro Gly Thr Asn Gly Gln His Ala Phe Phe Gln Leu 385 390 395 atc cac cag ggc act cgc ctt gtt cca gct gat ttc att ggt ttc gct 1611 Ile His Gln Gly Thr Arg Leu Val Pro Ala Asp Phe Ile Gly Phe Ala 400 405 410 cgt cca aag cag gat ctt cct gcc ggt gag cgc acc atg cat gac ctt 1659 Arg Pro Lys Gln Asp Leu Pro Ala Gly Glu Arg Thr Met His Asp Leu 415 420 425 ttg atg agc aac ttc ttc gca cag acc aag gtt ttg gct ttc ggt aag 1707 Leu Met Ser Asn Phe Phe Ala Gln Thr Lys Val Leu Ala Phe Gly Lys 430 435 440 445 aac gct gaa gag atc gct gcg gaa ggt gtc gca cct gag ctg gtc aac 1755 Asn Ala Glu Glu Ile Ala Ala Glu Gly Val Ala Pro Glu Leu Val Asn 450 455 460 cac aag gtc gtg cca ggt aat cgc cca acc acc acc att ttg gcg gag 1803 His Lys Val Val Pro Gly Asn Arg Pro Thr Thr Thr Ile Leu Ala Glu 465 470 475 gaa ctt acc cct tct att ctc ggt gcg ttg atc gct ttg tac gaa cac 1851 Glu Leu Thr Pro Ser Ile Leu Gly Ala Leu Ile Ala Leu Tyr Glu His 480 485 490 acc gtg atg gtt cag ggc gtg att tgg gac atc aac tcc ttc gac caa 1899 Thr Val Met Val Gln Gly Val Ile Trp Asp Ile Asn Ser Phe Asp Gln 495 500 505 tgg ggt gtt gaa ctg ggc aaa cag cag gca aat gac ctc gct ccg gct 1947 Trp Gly Val Glu Leu Gly Lys Gln Gln Ala Asn Asp Leu Ala Pro Ala 510 515 520 525 gtc tct ggt gaa gag gat gtt gac tcg gga gat tct tcc act gat tca 1995 Val Ser Gly Glu Glu Asp Val Asp Ser Gly Asp Ser Ser Thr Asp Ser 530 535 540 ctg att aag tgg tac cgc gca aat agg tagtcgcttg cttatagggt 2042 Leu Ile Lys Trp Tyr Arg Ala Asn Arg 545 550 caggggcgtg aagaatcctc gcctcatagc actggccgct atcatcctga cctcgttcaa 2102 tctgcgaaca gctattactg ctttagctcc gctggtttct gagattcggg atgatttagg 2162 ggttagtgct tctcttattg gtgtgttggg catgatcccg actgctatgt tcgcggttgc 2222 tgcgtttgcg cttccgtcgt tgaagaggaa gttcactact tcccaactgt tgatgtttgc 2282 catgctgttg actgctgccg gtcagattat tcgtgtcgct ggacctgctt cgctgttgat 2342 ggtcggtact gtgttcgcga tgtttgcgat cggagttacc aatgtgttgc ttccgattgc 2402 tgttagggag tattttccgc gtcacgtcgg tggaatgtcg acaacttatc tggtgtcgtt 2462 ccagattgtt caggcacttg ctccgacgct tgccgtgccg atttctcagt gggctacaca 2522 tgtggggttg accggttgga gggtgtcgct cggttcgtgg gcgctgctgg ggttggttgc 2582 ggcgatttcg tggattccgc tgttgagttt gcagggtgcc agggttgttg cggcgccgtc 2642 gaaggtttct cttcctgtgt ggaagtcttc ggttggtgtg gggctcgggt tgatgtttgg 2702 gtttacttcg tttgcgacgt atatcctcat gggttttatg ccgcagatgg taggtgatcc 2762 aaagaattca aaaagcttct cgagagtact tctagagcgg ccgcgggcc 2811 2 550 PRT Corynebacterium glutamicum 2 Met Leu Phe Asn Asp Asn Lys Gly Val Phe Met Ala Asp Ile Ser Thr 1 5 10 15 Thr Gln Val Trp Gln Asp Leu Thr Asp His Tyr Ser Asn Phe Gln Ala 20 25 30 Thr Thr Leu Arg Glu Leu Phe Lys Glu Glu Asn Arg Ala Glu Lys Tyr 35 40 45 Thr Phe Ser Ala Ala Gly Leu His Val Asp Leu Ser Lys Asn Leu Leu 50 55 60 Asp Asp Ala Thr Leu Thr Lys Leu Leu Ala Leu Thr Glu Glu Ser Gly 65 70 75 80 Leu Arg Glu Arg Ile Asp Ala Met Phe Ala Gly Glu His Leu Asn Asn 85 90 95 Thr Glu Asp Arg Ala Val Leu His Thr Ala Leu Arg Leu Pro Ala Glu 100 105 110 Ala Asp Leu Ser Val Asp Gly Gln Asp Val Ala Ala Asp Val His Glu 115 120 125 Val Leu Gly Arg Met Arg Asp Phe Ala Thr Ala Leu Arg Ser Gly Asn 130 135 140 Trp Leu Gly His Thr Gly His Thr Ile Lys Lys Ile Val Asn Ile Gly 145 150 155 160 Ile Gly Gly Ser Asp Leu Gly Pro Ala Met Ala Thr Lys Ala Leu Arg 165 170 175 Ala Tyr Ala Thr Ala Gly Ile Ser Ala Glu Phe Val Ser Asn Val Asp 180 185 190 Pro Ala Asp Leu Val Ser Val Leu Glu Asp Leu Asp Ala Glu Ser Thr 195 200 205 Leu Phe Val Ile Ala Ser Lys Thr Phe Thr Thr Gln Glu Thr Leu Ser 210 215 220 Asn Ala Arg Ala Ala Arg Ala Trp Leu Val Glu Lys Leu Gly Glu Glu 225 230 235 240 Ala Val Ala Lys His Phe Val Ala Val Ser Thr Asn Ala Glu Lys Val 245 250 255 Ala Glu Phe Gly Ile Asp Thr Asp Asn Met Phe Gly Phe Trp Asp Trp 260 265 270 Val Gly Gly Arg Tyr Ser Val Asp Ser Ala Val Gly Leu Ser Leu Met 275 280 285 Ala Val Ile Gly Pro Arg Asp Phe Met Arg Phe Leu Gly Gly Phe His 290 295 300 Ala Met Asp Glu His Phe Arg Thr Thr Lys Phe Glu Glu Asn Val Pro 305 310 315 320 Ile Leu Met Ala Leu Leu Gly Val Trp Tyr Ser Asp Phe Tyr Gly Ala 325 330 335 Glu Thr His Ala Val Leu Pro Tyr Ser Glu Asp Leu Ser Arg Phe Ala 340 345 350 Ala Tyr Leu Gln Gln Leu Thr Met Glu Thr Asn Gly Lys Ser Val His 355 360 365 Arg Asp Gly Ser Pro Val Ser Thr Gly Thr Gly Glu Ile Tyr Trp Gly 370 375 380 Glu Pro Gly Thr Asn Gly Gln His Ala Phe Phe Gln Leu Ile His Gln 385 390 395 400 Gly Thr Arg Leu Val Pro Ala Asp Phe Ile Gly Phe Ala Arg Pro Lys 405 410 415 Gln Asp Leu Pro Ala Gly Glu Arg Thr Met His Asp Leu Leu Met Ser 420 425 430 Asn Phe Phe Ala Gln Thr Lys Val Leu Ala Phe Gly Lys Asn Ala Glu 435 440 445 Glu Ile Ala Ala Glu Gly Val Ala Pro Glu Leu Val Asn His Lys Val 450 455 460 Val Pro Gly Asn Arg Pro Thr Thr Thr Ile Leu Ala Glu Glu Leu Thr 465 470 475 480 Pro Ser Ile Leu Gly Ala Leu Ile Ala Leu Tyr Glu His Thr Val Met 485 490 495 Val Gln Gly Val Ile Trp Asp Ile Asn Ser Phe Asp Gln Trp Gly Val 500 505 510 Glu Leu Gly Lys Gln Gln Ala Asn Asp Leu Ala Pro Ala Val Ser Gly 515 520 525 Glu Glu Asp Val Asp Ser Gly Asp Ser Ser Thr Asp Ser Leu Ile Lys 530 535 540 Trp Tyr Arg Ala Asn Arg 545 550 3 462 DNA Corynebacterium glutamicum 3 atggagacca atggcaagtc agtccaccgc gacggctccc ctgtttccac tggcactggc 60 gaaatttact ggggtgagcc tggcacaaat ggccagcacg ctttcttcca gctgatccac 120 cagggcactc gccttgttcc agctgatttc attggtttcg ctcgtccaaa gcaggatctt 180 cctgccggtg agcgcaccat gcatgacctt ttgatgagca acttcttcgc acagaccaag 240 gttttggctt tcggtaagaa cgctgaagag atcgctgcgg aaggtgtcgc acctgagctg 300 gtcaaccaca aggtcgtgcc aggtaatcgc ccaaccacca ccattttggc ggaggaactt 360 accccttcta ttctcggtgc gttgatcgct ttgtacgaac acaccgtgat ggttcagggc 420 gtgatttggg acatcaactc cttcgaccaa tggggcgtgg aa 462 4 2160 DNA Corynebacterium glutamicum CDS (327)..(2063) poxB 4 ttagaggcga ttctgtgagg tcactttttg tggggtcggg gtctaaattt ggccagtttt 60 cgaggcgacc agacaggcgt gcccacgatg tttaaatagg cgatcggtgg gcatctgtgt 120 ttggtttcga cgggctgaaa ccaaaccaga ctgcccagca acgacggaaa tcccaaaagt 180 gggcatccct gtttggtacc gagtacccac ccgggcctga aactccctgg caggcgggcg 240 aagcgtggca acaactggaa tttaagagca caattgaagt cgcaccaagt taggcaacac 300 aatagccata acgttgagga gttcag atg gca cac agc tac gca gaa caa tta 353 Met Ala His Ser Tyr Ala Glu Gln Leu 1 5 att gac act ttg gaa gct caa ggt gtg aag cga att tat ggt ttg gtg 401 Ile Asp Thr Leu Glu Ala Gln Gly Val Lys Arg Ile Tyr Gly Leu Val 10 15 20 25 ggt gac agc ctt aat ccg atc gtg gat gct gtc cgc caa tca gat att 449 Gly Asp Ser Leu Asn Pro Ile Val Asp Ala Val Arg Gln Ser Asp Ile 30 35 40 gag tgg gtg cac gtt cga aat gag gaa gcg gcg gcg ttt gca gcc ggt 497 Glu Trp Val His Val Arg Asn Glu Glu Ala Ala Ala Phe Ala Ala Gly 45 50 55 gcg gaa tcg ttg atc act ggg gag ctg gca gta tgt gct gct tct tgt 545 Ala Glu Ser Leu Ile Thr Gly Glu Leu Ala Val Cys Ala Ala Ser Cys 60 65 70 ggt cct gga aac aca cac ctg att cag ggt ctt tat gat tcg cat cga 593 Gly Pro Gly Asn Thr His Leu Ile Gln Gly Leu Tyr Asp Ser His Arg 75 80 85 aat ggt gcg aag gtg ttg gcc atc gct agc cat att ccg agt gcc cag 641 Asn Gly Ala Lys Val Leu Ala Ile Ala Ser His Ile Pro Ser Ala Gln 90 95 100 105 att ggt tcg acg ttc ttc cag gaa acg cat ccg gag att ttg ttt aag 689 Ile Gly Ser Thr Phe Phe Gln Glu Thr His Pro Glu Ile Leu Phe Lys 110 115 120 gaa tgc tct ggt tac tgc gag atg gtg aat ggt ggt gag cag ggt gaa 737 Glu Cys Ser Gly Tyr Cys Glu Met Val Asn Gly Gly Glu Gln Gly Glu 125 130 135 cgc att ttg cat cac gcg att cag tcc acc atg gcg ggt aaa ggt gtg 785 Arg Ile Leu His His Ala Ile Gln Ser Thr Met Ala Gly Lys Gly Val 140 145 150 tcg gtg gta gtg att cct ggt gat atc gct aag gaa gac gca ggt gac 833 Ser Val Val Val Ile Pro Gly Asp Ile Ala Lys Glu Asp Ala Gly Asp 155 160 165 ggt act tat tcc aat tcc act att tct tct ggc act cct gtg gtg ttc 881 Gly Thr Tyr Ser Asn Ser Thr Ile Ser Ser Gly Thr Pro Val Val Phe 170 175 180 185 ccg gat cct act gag gct gca gcg ctg gtg gag gcg att aac aac gct 929 Pro Asp Pro Thr Glu Ala Ala Ala Leu Val Glu Ala Ile Asn Asn Ala 190 195 200 aag tct gtc act ttg ttc tgc ggt gcg ggc gtg aag aat gct cgc gcg 977 Lys Ser Val Thr Leu Phe Cys Gly Ala Gly Val Lys Asn Ala Arg Ala 205 210 215 cag gtg ttg gag ttg gcg gag aag att aaa tca ccg atc ggg cat gcg 1025 Gln Val Leu Glu Leu Ala Glu Lys Ile Lys Ser Pro Ile Gly His Ala 220 225 230 ctg ggt ggt aag cag tac atc cag cat gag aat ccg ttt gag gtc ggc 1073 Leu Gly Gly Lys Gln Tyr Ile Gln His Glu Asn Pro Phe Glu Val Gly 235 240 245 atg tct ggc ctg ctt ggt tac ggc gcc tgc gtg gat gcg tcc aat gag 1121 Met Ser Gly Leu Leu Gly Tyr Gly Ala Cys Val Asp Ala Ser Asn Glu 250 255 260 265 gcg gat ctg ctg att cta ttg ggt acg gat ttc cct tat tct gat ttc 1169 Ala Asp Leu Leu Ile Leu Leu Gly Thr Asp Phe Pro Tyr Ser Asp Phe 270 275 280 ctt cct aaa gac aac gtt gcc cag gtg gat atc aac ggt gcg cac att 1217 Leu Pro Lys Asp Asn Val Ala Gln Val Asp Ile Asn Gly Ala His Ile 285 290 295 ggt cga cgt acc acg gtg aag tat ccg gtg acc ggt gat gtt gct gca 1265 Gly Arg Arg Thr Thr Val Lys Tyr Pro Val Thr Gly Asp Val Ala Ala 300 305 310 aca atc gaa aat att ttg cct cat gtg aag gaa aaa aca gat cgt tcc 1313 Thr Ile Glu Asn Ile Leu Pro His Val Lys Glu Lys Thr Asp Arg Ser 315 320 325 ttc ctt gat cgg atg ctc aag gca cac gag cgt aag ttg agc tcg gtg 1361 Phe Leu Asp Arg Met Leu Lys Ala His Glu Arg Lys Leu Ser Ser Val 330 335 340 345 gta gag acg tac aca cat aac gtc gag aag cat gtg cct att cac cct 1409 Val Glu Thr Tyr Thr His Asn Val Glu Lys His Val Pro Ile His Pro 350 355 360 gaa tac gtt gcc tct att ttg aac gag ctg gcg gat aag gat gcg gtg 1457 Glu Tyr Val Ala Ser Ile Leu Asn Glu Leu Ala Asp Lys Asp Ala Val 365 370 375 ttt act gtg gat acc ggc atg tgc aat gtg tgg cat gcg agg tac atc 1505 Phe Thr Val Asp Thr Gly Met Cys Asn Val Trp His Ala Arg Tyr Ile 380 385 390 gag aat ccg gag gga acg cgc gac ttt gtg ggt tca ttc cgc cac ggc 1553 Glu Asn Pro Glu Gly Thr Arg Asp Phe Val Gly Ser Phe Arg His Gly 395 400 405 acg atg gct aat gcg ttg cct cat gcg att ggt gcg caa agt gtt gat 1601 Thr Met Ala Asn Ala Leu Pro His Ala Ile Gly Ala Gln Ser Val Asp 410 415 420 425 cga aac cgc cag gtg atc gcg atg tgt ggc gat ggt ggt ttg ggc atg 1649 Arg Asn Arg Gln Val Ile Ala Met Cys Gly Asp Gly Gly Leu Gly Met 430 435 440 ctg ctg ggt gag ctt ctg acc gtt aag ctg cac caa ctt ccg ctg aag 1697 Leu Leu Gly Glu Leu Leu Thr Val Lys Leu His Gln Leu Pro Leu Lys 445 450 455 gct gtg gtg ttt aac aac agt tct ttg ggc atg gtg aag ttg gag atg 1745 Ala Val Val Phe Asn Asn Ser Ser Leu Gly Met Val Lys Leu Glu Met 460 465 470 ctc gtg gag gga cag cca gaa ttt ggt act gac cat gag gaa gtg aat 1793 Leu Val Glu Gly Gln Pro Glu Phe Gly Thr Asp His Glu Glu Val Asn 475 480 485 ttc gca gag att gcg gcg gct gcg ggt atc aaa tcg gta cgc atc acc 1841 Phe Ala Glu Ile Ala Ala Ala Ala Gly Ile Lys Ser Val Arg Ile Thr 490 495 500 505 gat ccg aag aaa gtt cgc gag cag cta gct gag gca ttg gca tat cct 1889 Asp Pro Lys Lys Val Arg Glu Gln Leu Ala Glu Ala Leu Ala Tyr Pro 510 515 520 gga cct gta ctg atc gat atc gtc acg gat cct aat gcg ctg tcg atc 1937 Gly Pro Val Leu Ile Asp Ile Val Thr Asp Pro Asn Ala Leu Ser Ile 525 530 535 cca cca acc atc acg tgg gaa cag gtc atg gga ttc agc aag gcg gcc 1985 Pro Pro Thr Ile Thr Trp Glu Gln Val Met Gly Phe Ser Lys Ala Ala 540 545 550 acc cga acc gtc ttt ggt gga gga gta gga gcg atg atc gat ctg gcc 2033 Thr Arg Thr Val Phe Gly Gly Gly Val Gly Ala Met Ile Asp Leu Ala 555 560 565 cgt tcg aac ata agg aat att cct act cca tgatgattga tacacctgct 2083 Arg Ser Asn Ile Arg Asn Ile Pro Thr Pro 570 575 gttctcattg accgcgagcg cttaactgcc aacatttcca ggatggcagc tcacgccggt 2143 gcccatgaga ttgccct 2160 5 579 PRT Corynebacterium glutamicum 5 Met Ala His Ser Tyr Ala Glu Gln Leu Ile Asp Thr Leu Glu Ala Gln 1 5 10 15 Gly Val Lys Arg Ile Tyr Gly Leu Val Gly Asp Ser Leu Asn Pro Ile 20 25 30 Val Asp Ala Val Arg Gln Ser Asp Ile Glu Trp Val His Val Arg Asn 35 40 45 Glu Glu Ala Ala Ala Phe Ala Ala Gly Ala Glu Ser Leu Ile Thr Gly 50 55 60 Glu Leu Ala Val Cys Ala Ala Ser Cys Gly Pro Gly Asn Thr His Leu 65 70 75 80 Ile Gln Gly Leu Tyr Asp Ser His Arg Asn Gly Ala Lys Val Leu Ala 85 90 95 Ile Ala Ser His Ile Pro Ser Ala Gln Ile Gly Ser Thr Phe Phe Gln 100 105 110 Glu Thr His Pro Glu Ile Leu Phe Lys Glu Cys Ser Gly Tyr Cys Glu 115 120 125 Met Val Asn Gly Gly Glu Gln Gly Glu Arg Ile Leu His His Ala Ile 130 135 140 Gln Ser Thr Met Ala Gly Lys Gly Val Ser Val Val Val Ile Pro Gly 145 150 155 160 Asp Ile Ala Lys Glu Asp Ala Gly Asp Gly Thr Tyr Ser Asn Ser Thr 165 170 175 Ile Ser Ser Gly Thr Pro Val Val Phe Pro Asp Pro Thr Glu Ala Ala 180 185 190 Ala Leu Val Glu Ala Ile Asn Asn Ala Lys Ser Val Thr Leu Phe Cys 195 200 205 Gly Ala Gly Val Lys Asn Ala Arg Ala Gln Val Leu Glu Leu Ala Glu 210 215 220 Lys Ile Lys Ser Pro Ile Gly His Ala Leu Gly Gly Lys Gln Tyr Ile 225 230 235 240 Gln His Glu Asn Pro Phe Glu Val Gly Met Ser Gly Leu Leu Gly Tyr 245 250 255 Gly Ala Cys Val Asp Ala Ser Asn Glu Ala Asp Leu Leu Ile Leu Leu 260 265 270 Gly Thr Asp Phe Pro Tyr Ser Asp Phe Leu Pro Lys Asp Asn Val Ala 275 280 285 Gln Val Asp Ile Asn Gly Ala His Ile Gly Arg Arg Thr Thr Val Lys 290 295 300 Tyr Pro Val Thr Gly Asp Val Ala Ala Thr Ile Glu Asn Ile Leu Pro 305 310 315 320 His Val Lys Glu Lys Thr Asp Arg Ser Phe Leu Asp Arg Met Leu Lys 325 330 335 Ala His Glu Arg Lys Leu Ser Ser Val Val Glu Thr Tyr Thr His Asn 340 345 350 Val Glu Lys His Val Pro Ile His Pro Glu Tyr Val Ala Ser Ile Leu 355 360 365 Asn Glu Leu Ala Asp Lys Asp Ala Val Phe Thr Val Asp Thr Gly Met 370 375 380 Cys Asn Val Trp His Ala Arg Tyr Ile Glu Asn Pro Glu Gly Thr Arg 385 390 395 400 Asp Phe Val Gly Ser Phe Arg His Gly Thr Met Ala Asn Ala Leu Pro 405 410 415 His Ala Ile Gly Ala Gln Ser Val Asp Arg Asn Arg Gln Val Ile Ala 420 425 430 Met Cys Gly Asp Gly Gly Leu Gly Met Leu Leu Gly Glu Leu Leu Thr 435 440 445 Val Lys Leu His Gln Leu Pro Leu Lys Ala Val Val Phe Asn Asn Ser 450 455 460 Ser Leu Gly Met Val Lys Leu Glu Met Leu Val Glu Gly Gln Pro Glu 465 470 475 480 Phe Gly Thr Asp His Glu Glu Val Asn Phe Ala Glu Ile Ala Ala Ala 485 490 495 Ala Gly Ile Lys Ser Val Arg Ile Thr Asp Pro Lys Lys Val Arg Glu 500 505 510 Gln Leu Ala Glu Ala Leu Ala Tyr Pro Gly Pro Val Leu Ile Asp Ile 515 520 525 Val Thr Asp Pro Asn Ala Leu Ser Ile Pro Pro Thr Ile Thr Trp Glu 530 535 540 Gln Val Met Gly Phe Ser Lys Ala Ala Thr Arg Thr Val Phe Gly Gly 545 550 555 560 Gly Val Gly Ala Met Ile Asp Leu Ala Arg Ser Asn Ile Arg Asn Ile 565 570 575 Pro Thr Pro 6 875 DNA Corynebacterium glutamicum 6 tgcgagatgg tgaatggtgg tgagcagggt gaacgcattt tgcatcacgc gattcagtcc 60 accatggcgg gtaaaggtgt gtcggtggta gtgattcctg gtgatatcgc taaggaagac 120 gcaggtgacg gtacttattc caattccact atttcttctg gcactcctgt ggtgttcccg 180 gatcctactg aggctgcagc gctggtggag gcgattaaca acgctaagtc tgtcactttg 240 ttctgcggtg cgggcgtgaa gaatgctcgc gcgcaggtgt tggagttggc ggagaagatt 300 aaatcaccga tcgggcatgc gctgggtggt aagcagtaca tccagcatga gaatccgttt 360 gaggtcggca tgtctggcct gcttggttac ggcgcctgcg tggatgcgtc caatgaggcg 420 gatctgctga ttctattggg tacggatttc ccttattctg atttccttcc taaagacaac 480 gttgcccagg tggatatcaa cggtgcgcac attggtcgac gtaccacggt gaagtatccg 540 gtgaccggtg atgttgctgc aacaatcgaa aatattttgc ctcatgtgaa ggaaaaaaca 600 gatcgttcct tccttgatcg gatgctcaag gcacacgagc gtaagttgag ctcggtggta 660 gagacgtaca cacataacgt cgagaagcat gtgcctattc accctgaata cgttgcctct 720 attttgaacg agctggcgga taaggatgcg gtgtttactg tggataccgg catgtgcaat 780 gtgtggcatg cgaggtacat cgagaatccg gagggaacgc gcgactttgt gggttcattc 840 cgccacggca cgatggctaa tgcgttgcct catgc 875 7 2260 DNA Brevibacterium flavum MJ-233 CDS (629)..(2080) Glucose-6-Phosphate Dehydrogenase (EC 1.1.1.49); JP-A-09-22461 7 gatccgatga ggctttggct ctgcgtggca aggcaggcgt tgccaacgct cagcgcgctt 60 acgctgtgta caaggagctt ttcgacgccg ccgagctgcc tgtaaggcgc caacactcag 120 cgcccactgt gggcatccac cggcgtgaag aaccctgcgt acgctgcaac tctttacgtt 180 tccgagctgg ctggtccaaa caccgtcaac accatgccag aaggcaccat cgacgctgtt 240 ctggaactgg gcaacctgca cggtgacaac ctgtccaact ccgcggcaga agctgacgct 300 gtgttctccc agcttgaggc tctgggcgtt gacttggcag atgtcttcca ggtcctggag 360 accgaggccg tggacaagtt cgttgcttct tggagcgaac tgcttgagtc catggaagct 420 cgcctgaagt agaatcagca cgctgcatca gtaacggcga catgaaatcg aattagttcg 480 atcttatgtg gccgttacac atctttcatt aaagaaagga tcgtgacgct taccatcgtg 540 agcacaaaac acgaccccct ccagctggac aaacccactg cgcgacccgc aggataaacg 600 actcccccgc atcgctggcc cttccggc atg gtg atc ttc ggt gtc act ggc 652 Met Val Ile Phe Gly Val Thr Gly 1 5 gac ttg gct cga aag aag ctg ctc ccc gcc att tat gat cta gca aac 700 Asp Leu Ala Arg Lys Lys Leu Leu Pro Ala Ile Tyr Asp Leu Ala Asn 10 15 20 cgc gga ttg ctg ccc cca gga ttc tcg ttg gta ggt tac ggc cgc cgc 748 Arg Gly Leu Leu Pro Pro Gly Phe Ser Leu Val Gly Tyr Gly Arg Arg 25 30 35 40 gaa tgg tcc aaa gaa gac ttt gaa aaa tac gta cgc gat gcc gca agt 796 Glu Trp Ser Lys Glu Asp Phe Glu Lys Tyr Val Arg Asp Ala Ala Ser 45 50 55 gct ggt gct cgt acg gaa ttc cgt gaa aat gtt tgg gag cgc ctc gcc 844 Ala Gly Ala Arg Thr Glu Phe Arg Glu Asn Val Trp Glu Arg Leu Ala 60 65 70 gag ggt atg gaa ttt gtt cgc ggc aac ttt gat gat gat gca gct ttc 892 Glu Gly Met Glu Phe Val Arg Gly Asn Phe Asp Asp Asp Ala Ala Phe 75 80 85 gac aac ctc gct gca aca ctc aag cgc atc gac aaa acc cgc ggc acc 940 Asp Asn Leu Ala Ala Thr Leu Lys Arg Ile Asp Lys Thr Arg Gly Thr 90 95 100 gcc ggc aac tgg gct tac tac ctg tcc att cca cca gat tcc ttc gca 988 Ala Gly Asn Trp Ala Tyr Tyr Leu Ser Ile Pro Pro Asp Ser Phe Ala 105 110 115 120 gcg gtc tgc cac cag ctg gag cgt tcc ggc atg gct gaa tcc acc gaa 1036 Ala Val Cys His Gln Leu Glu Arg Ser Gly Met Ala Glu Ser Thr Glu 125 130 135 gaa gca tgg cgc cgc gtg atc atc gag aag cct ttc ggc cac aac ctc 1084 Glu Ala Trp Arg Arg Val Ile Ile Glu Lys Pro Phe Gly His Asn Leu 140 145 150 gaa tcc gca cac gag ctc aac cag ctg gtc aac gca gtc ttc cca gaa 1132 Glu Ser Ala His Glu Leu Asn Gln Leu Val Asn Ala Val Phe Pro Glu 155 160 165 tct tct gtg ttc cgc atc gac cac tat ttg ggc aag gaa aca gtt caa 1180 Ser Ser Val Phe Arg Ile Asp His Tyr Leu Gly Lys Glu Thr Val Gln 170 175 180 aac atc ctg gct ctg cgt ttt gct aac cag ctg ttt gag cca ctg tgg 1228 Asn Ile Leu Ala Leu Arg Phe Ala Asn Gln Leu Phe Glu Pro Leu Trp 185 190 195 200 aac tcc aac tac gtt gac cac gtc cag atc acc atg gct gaa gat att 1276 Asn Ser Asn Tyr Val Asp His Val Gln Ile Thr Met Ala Glu Asp Ile 205 210 215 ggc ttg ggt gga cgt gct ggt tac tac gac ggc atc ggc gca gcc cgc 1324 Gly Leu Gly Gly Arg Ala Gly Tyr Tyr Asp Gly Ile Gly Ala Ala Arg 220 225 230 gac gtc atc cag aac cac ctg atc cag ctc ttg gct ctg gtt gcc atg 1372 Asp Val Ile Gln Asn His Leu Ile Gln Leu Leu Ala Leu Val Ala Met 235 240 245 gaa gaa cca att tct ttc gtg cca gcg cag ctg cag gca gaa aag atc 1420 Glu Glu Pro Ile Ser Phe Val Pro Ala Gln Leu Gln Ala Glu Lys Ile 250 255 260 aag gtg ctc tct gcg aca aag ccg tgc tac cca ttg gat aaa acc tcc 1468 Lys Val Leu Ser Ala Thr Lys Pro Cys Tyr Pro Leu Asp Lys Thr Ser 265 270 275 280 gct cgt ggt cag tac gct gcc ggt tgg cag ggc tct gag tta gtc aag 1516 Ala Arg Gly Gln Tyr Ala Ala Gly Trp Gln Gly Ser Glu Leu Val Lys 285 290 295 gga ctt cgc gaa gaa gat ggc ttc aac cct gag tcc acc act gag act 1564 Gly Leu Arg Glu Glu Asp Gly Phe Asn Pro Glu Ser Thr Thr Glu Thr 300 305 310 ttt gcg gct tgt acc tta gag atc acg tct cgt cgc tgg gct ggt gtg 1612 Phe Ala Ala Cys Thr Leu Glu Ile Thr Ser Arg Arg Trp Ala Gly Val 315 320 325 ccg ttc tac ctg cgc acc ggt aag cgt ctt ggt cgc cgt gtt act gag 1660 Pro Phe Tyr Leu Arg Thr Gly Lys Arg Leu Gly Arg Arg Val Thr Glu 330 335 340 att gcc gtg gtg ttt aaa gac gca cca cac cag cct ttc gac ggc gac 1708 Ile Ala Val Val Phe Lys Asp Ala Pro His Gln Pro Phe Asp Gly Asp 345 350 355 360 atg act gta tcc ctt ggc caa aac gcc atc gtg att cgc gtg cag cct 1756 Met Thr Val Ser Leu Gly Gln Asn Ala Ile Val Ile Arg Val Gln Pro 365 370 375 gat gaa ggt gtg ctc atc cgc ttc ggt tcc aag gtt cca ggt tct gcc 1804 Asp Glu Gly Val Leu Ile Arg Phe Gly Ser Lys Val Pro Gly Ser Ala 380 385 390 atg gaa gtc cgt gac gtc aac atg gac ttc tcc tac tca gaa tcc ttc 1852 Met Glu Val Arg Asp Val Asn Met Asp Phe Ser Tyr Ser Glu Ser Phe 395 400 405 act gaa gaa tca cct gaa gca tac gag cgc ctt atc ttg gat gcg ctg 1900 Thr Glu Glu Ser Pro Glu Ala Tyr Glu Arg Leu Ile Leu Asp Ala Leu 410 415 420 ttg gat gaa tcc agc ctt ttc cct acc aac gag gaa gtg gaa ctg agc 1948 Leu Asp Glu Ser Ser Leu Phe Pro Thr Asn Glu Glu Val Glu Leu Ser 425 430 435 440 tgg aag att ctg gat cca att ctt gaa gca tgg gat gcc gat gga gaa 1996 Trp Lys Ile Leu Asp Pro Ile Leu Glu Ala Trp Asp Ala Asp Gly Glu 445 450 455 cca gag gat tac cca gca ggt acg tgg ggt cca aag agc gct gat gaa 2044 Pro Glu Asp Tyr Pro Ala Gly Thr Trp Gly Pro Lys Ser Ala Asp Glu 460 465 470 atg ctt tcc cgc aac ggt cac acc tgg cgc agg cca taatttaggg 2090 Met Leu Ser Arg Asn Gly His Thr Trp Arg Arg Pro 475 480 gcaaaaaatg atctttgaac ttccggatac caccacccag caaatttcca agaccctaac 2150 tcgactgcgt gaatcgggca cccaggtcac caccggccga gtgctcaccc tcatcgtggt 2210 cactgactcc gaaagcgatg tcgctgcagt taccgagtcc accaatgaag 2260 8 484 PRT Brevibacterium flavum MJ-233 8 Met Val Ile Phe Gly Val Thr Gly Asp Leu Ala Arg Lys Lys Leu Leu 1 5 10 15 Pro Ala Ile Tyr Asp Leu Ala Asn Arg Gly Leu Leu Pro Pro Gly Phe 20 25 30 Ser Leu Val Gly Tyr Gly Arg Arg Glu Trp Ser Lys Glu Asp Phe Glu 35 40 45 Lys Tyr Val Arg Asp Ala Ala Ser Ala Gly Ala Arg Thr Glu Phe Arg 50 55 60 Glu Asn Val Trp Glu Arg Leu Ala Glu Gly Met Glu Phe Val Arg Gly 65 70 75 80 Asn Phe Asp Asp Asp Ala Ala Phe Asp Asn Leu Ala Ala Thr Leu Lys 85 90 95 Arg Ile Asp Lys Thr Arg Gly Thr Ala Gly Asn Trp Ala Tyr Tyr Leu 100 105 110 Ser Ile Pro Pro Asp Ser Phe Ala Ala Val Cys His Gln Leu Glu Arg 115 120 125 Ser Gly Met Ala Glu Ser Thr Glu Glu Ala Trp Arg Arg Val Ile Ile 130 135 140 Glu Lys Pro Phe Gly His Asn Leu Glu Ser Ala His Glu Leu Asn Gln 145 150 155 160 Leu Val Asn Ala Val Phe Pro Glu Ser Ser Val Phe Arg Ile Asp His 165 170 175 Tyr Leu Gly Lys Glu Thr Val Gln Asn Ile Leu Ala Leu Arg Phe Ala 180 185 190 Asn Gln Leu Phe Glu Pro Leu Trp Asn Ser Asn Tyr Val Asp His Val 195 200 205 Gln Ile Thr Met Ala Glu Asp Ile Gly Leu Gly Gly Arg Ala Gly Tyr 210 215 220 Tyr Asp Gly Ile Gly Ala Ala Arg Asp Val Ile Gln Asn His Leu Ile 225 230 235 240 Gln Leu Leu Ala Leu Val Ala Met Glu Glu Pro Ile Ser Phe Val Pro 245 250 255 Ala Gln Leu Gln Ala Glu Lys Ile Lys Val Leu Ser Ala Thr Lys Pro 260 265 270 Cys Tyr Pro Leu Asp Lys Thr Ser Ala Arg Gly Gln Tyr Ala Ala Gly 275 280 285 Trp Gln Gly Ser Glu Leu Val Lys Gly Leu Arg Glu Glu Asp Gly Phe 290 295 300 Asn Pro Glu Ser Thr Thr Glu Thr Phe Ala Ala Cys Thr Leu Glu Ile 305 310 315 320 Thr Ser Arg Arg Trp Ala Gly Val Pro Phe Tyr Leu Arg Thr Gly Lys 325 330 335 Arg Leu Gly Arg Arg Val Thr Glu Ile Ala Val Val Phe Lys Asp Ala 340 345 350 Pro His Gln Pro Phe Asp Gly Asp Met Thr Val Ser Leu Gly Gln Asn 355 360 365 Ala Ile Val Ile Arg Val Gln Pro Asp Glu Gly Val Leu Ile Arg Phe 370 375 380 Gly Ser Lys Val Pro Gly Ser Ala Met Glu Val Arg Asp Val Asn Met 385 390 395 400 Asp Phe Ser Tyr Ser Glu Ser Phe Thr Glu Glu Ser Pro Glu Ala Tyr 405 410 415 Glu Arg Leu Ile Leu Asp Ala Leu Leu Asp Glu Ser Ser Leu Phe Pro 420 425 430 Thr Asn Glu Glu Val Glu Leu Ser Trp Lys Ile Leu Asp Pro Ile Leu 435 440 445 Glu Ala Trp Asp Ala Asp Gly Glu Pro Glu Asp Tyr Pro Ala Gly Thr 450 455 460 Trp Gly Pro Lys Ser Ala Asp Glu Met Leu Ser Arg Asn Gly His Thr 465 470 475 480 Trp Arg Arg Pro 9 2259 DNA Corynebacterium glutamicum CDS (538)..(2079) Zwf-Protein 9 gatccgatga ggctttggct ctgcgtggca aggcaggcgt tgccaacgct cagcgcgctt 60 acgctgtgta caaggagctt ttcgacgccg ccgagctgcc tgtaaggcgc caacactcag 120 cgcccactgt gggcatccac cggcgtgaag aaccctgcgt acgctgcaac tctttacgtt 180 tccgagctgg ctggtccaaa caccgtcaac accatgccag aaggcaccat cgacgctgtt 240 ctggaactgg gcaacctgca cggtgacaac ctgtccaact ccgcggcaga agctgacgct 300 gtgttctccc agcttgaggc tctgggcgtt gacttggcag atgtcttcca ggtcctggag 360 accgaggccg tggacaagtt cgttgcttct tggagcgaac tgcttgagtc catggaagct 420 cgcctgaagt agaatcagca cgctgcatca gtaacggcga catgaaatcg aattagttcg 480 atcttatgtg gccgttacac atctttcatt aaagaaagga tcgtgacgct taccatc 537 gtg agc aca aac acg acc ccc tcc agc tgg aca aac cca ctg cgc gac 585 Met Ser Thr Asn Thr Thr Pro Ser Ser Trp Thr Asn Pro Leu Arg Asp 1 5 10 15 ccg cag gat aaa cga ctc ccc cgc atc gct ggc cct tcc ggc atg gtg 633 Pro Gln Asp Lys Arg Leu Pro Arg Ile Ala Gly Pro Ser Gly Met Val 20 25 30 atc ttc ggt gtc act ggc gac ttg gct cga aag aag ctg ctc ccc gcc 681 Ile Phe Gly Val Thr Gly Asp Leu Ala Arg Lys Lys Leu Leu Pro Ala 35 40 45 att tat gat cta gca aac cgc gga ttg ctg ccc cca gga ttc tcg ttg 729 Ile Tyr Asp Leu Ala Asn Arg Gly Leu Leu Pro Pro Gly Phe Ser Leu 50 55 60 gta ggt tac ggc cgc cgc gaa tgg tcc aaa gaa gac ttt gaa aaa tac 777 Val Gly Tyr Gly Arg Arg Glu Trp Ser Lys Glu Asp Phe Glu Lys Tyr 65 70 75 80 gta cgc gat gcc gca agt gct ggt gct cgt acg gaa ttc cgt gaa aat 825 Val Arg Asp Ala Ala Ser Ala Gly Ala Arg Thr Glu Phe Arg Glu Asn 85 90 95 gtt tgg gag cgc ctc gcc gag ggt atg gaa ttt gtt cgc ggc aac ttt 873 Val Trp Glu Arg Leu Ala Glu Gly Met Glu Phe Val Arg Gly Asn Phe 100 105 110 gat gat gat gca gct ttc gac aac ctc gct gca aca ctc aag cgc atc 921 Asp Asp Asp Ala Ala Phe Asp Asn Leu Ala Ala Thr Leu Lys Arg Ile 115 120 125 gac aaa acc cgc ggc acc gcc ggc aac tgg gct tac tac ctg tcc att 969 Asp Lys Thr Arg Gly Thr Ala Gly Asn Trp Ala Tyr Tyr Leu Ser Ile 130 135 140 cca cca gat tcc ttc gca gcg gtc tgc cac cag ctg gag cgt tcc ggc 1017 Pro Pro Asp Ser Phe Ala Ala Val Cys His Gln Leu Glu Arg Ser Gly 145 150 155 160 atg gct gaa tcc acc gaa gaa gca tgg cgc cgc gtg atc atc gag aag 1065 Met Ala Glu Ser Thr Glu Glu Ala Trp Arg Arg Val Ile Ile Glu Lys 165 170 175 cct ttc ggc cac aac ctc gaa tcc gca cac gag ctc aac cag ctg gtc 1113 Pro Phe Gly His Asn Leu Glu Ser Ala His Glu Leu Asn Gln Leu Val 180 185 190 aac gca gtc ttc cca gaa tct tct gtg ttc cgc atc gac cac tat ttg 1161 Asn Ala Val Phe Pro Glu Ser Ser Val Phe Arg Ile Asp His Tyr Leu 195 200 205 ggc aag gaa aca gtt caa aac atc ctg gct ctg cgt ttt gct aac cag 1209 Gly Lys Glu Thr Val Gln Asn Ile Leu Ala Leu Arg Phe Ala Asn Gln 210 215 220 ctg ttt gag cca ctg tgg aac tcc aac tac gtt gac cac gtc cag atc 1257 Leu Phe Glu Pro Leu Trp Asn Ser Asn Tyr Val Asp His Val Gln Ile 225 230 235 240 acc atg gct gaa gat att ggc ttg ggt gga cgt gct ggt tac tac gac 1305 Thr Met Ala Glu Asp Ile Gly Leu Gly Gly Arg Ala Gly Tyr Tyr Asp 245 250 255 ggc atc ggc gca gcc cgc gac gtc atc cag aac cac ctg atc cag ctc 1353 Gly Ile Gly Ala Ala Arg Asp Val Ile Gln Asn His Leu Ile Gln Leu 260 265 270 ttg gct ctg gtt gcc atg gaa gaa cca att tct ttc gtg cca gcg cag 1401 Leu Ala Leu Val Ala Met Glu Glu Pro Ile Ser Phe Val Pro Ala Gln 275 280 285 ctg cag gca gaa aag atc aag gtg ctc tct gcg aca aag ccg tgc tac 1449 Leu Gln Ala Glu Lys Ile Lys Val Leu Ser Ala Thr Lys Pro Cys Tyr 290 295 300 cca ttg gat aaa acc tcc gct cgt ggt cag tac gct gcc ggt tgg cag 1497 Pro Leu Asp Lys Thr Ser Ala Arg Gly Gln Tyr Ala Ala Gly Trp Gln 305 310 315 320 ggc tct gag tta gtc aag gga ctt cgc gaa gaa gat ggc ttc aac cct 1545 Gly Ser Glu Leu Val Lys Gly Leu Arg Glu Glu Asp Gly Phe Asn Pro 325 330 335 gag tcc acc act gag act ttt gcg gct tgt acc tta gag atc acg tct 1593 Glu Ser Thr Thr Glu Thr Phe Ala Ala Cys Thr Leu Glu Ile Thr Ser 340 345 350 cgt cgc tgg gct ggt gtg ccg ttc tac ctg cgc acc ggt aag cgt ctt 1641 Arg Arg Trp Ala Gly Val Pro Phe Tyr Leu Arg Thr Gly Lys Arg Leu 355 360 365 ggt cgc cgt gtt act gag att gcc gtg gtg ttt aaa gac gca cca cac 1689 Gly Arg Arg Val Thr Glu Ile Ala Val Val Phe Lys Asp Ala Pro His 370 375 380 cag cct ttc gac ggc gac atg act gta tcc ctt ggc caa aac gcc atc 1737 Gln Pro Phe Asp Gly Asp Met Thr Val Ser Leu Gly Gln Asn Ala Ile 385 390 395 400 gtg att cgc gtg cag cct gat gaa ggt gtg ctc atc cgc ttc ggt tcc 1785 Val Ile Arg Val Gln Pro Asp Glu Gly Val Leu Ile Arg Phe Gly Ser 405 410 415 aag gtt cca ggt tct gcc atg gaa gtc cgt gac gtc aac atg gac ttc 1833 Lys Val Pro Gly Ser Ala Met Glu Val Arg Asp Val Asn Met Asp Phe 420 425 430 tcc tac tca gaa tcc ttc act gaa gaa tca cct gaa gca tac gag cgc 1881 Ser Tyr Ser Glu Ser Phe Thr Glu Glu Ser Pro Glu Ala Tyr Glu Arg 435 440 445 ctt atc ttg gat gcg ctg ttg gat gaa tcc agc ctt ttc cct acc aac 1929 Leu Ile Leu Asp Ala Leu Leu Asp Glu Ser Ser Leu Phe Pro Thr Asn 450 455 460 gag gaa gtg gaa ctg agc tgg aag att ctg gat cca att ctt gaa gca 1977 Glu Glu Val Glu Leu Ser Trp Lys Ile Leu Asp Pro Ile Leu Glu Ala 465 470 475 480 tgg gat gcc gat gga gaa cca gag gat tac cca gca ggt acg tgg ggt 2025 Trp Asp Ala Asp Gly Glu Pro Glu Asp Tyr Pro Ala Gly Thr Trp Gly 485 490 495 cca aag agc gct gat gaa atg ctt tcc cgc aac ggt cac acc tgg cgc 2073 Pro Lys Ser Ala Asp Glu Met Leu Ser Arg Asn Gly His Thr Trp Arg 500 505 510 agg cca taatttaggg gcaaaaaatg atctttgaac ttccggatac caccacccag 2129 Arg Pro caaatttcca agaccctaac tcgactgcgt gaatcgggca cccaggtcac caccggccga 2189 gtgctcaccc tcatcgtggt cactgactcc gaaagcgatg tcgctgcagt taccgagtcc 2249 accaatgaag 2259 10 514 PRT Corynebacterium glutamicum 10 Met Ser Thr Asn Thr Thr Pro Ser Ser Trp Thr Asn Pro Leu Arg Asp 1 5 10 15 Pro Gln Asp Lys Arg Leu Pro Arg Ile Ala Gly Pro Ser Gly Met Val 20 25 30 Ile Phe Gly Val Thr Gly Asp Leu Ala Arg Lys Lys Leu Leu Pro Ala 35 40 45 Ile Tyr Asp Leu Ala Asn Arg Gly Leu Leu Pro Pro Gly Phe Ser Leu 50 55 60 Val Gly Tyr Gly Arg Arg Glu Trp Ser Lys Glu Asp Phe Glu Lys Tyr 65 70 75 80 Val Arg Asp Ala Ala Ser Ala Gly Ala Arg Thr Glu Phe Arg Glu Asn 85 90 95 Val Trp Glu Arg Leu Ala Glu Gly Met Glu Phe Val Arg Gly Asn Phe 100 105 110 Asp Asp Asp Ala Ala Phe Asp Asn Leu Ala Ala Thr Leu Lys Arg Ile 115 120 125 Asp Lys Thr Arg Gly Thr Ala Gly Asn Trp Ala Tyr Tyr Leu Ser Ile 130 135 140 Pro Pro Asp Ser Phe Ala Ala Val Cys His Gln Leu Glu Arg Ser Gly 145 150 155 160 Met Ala Glu Ser Thr Glu Glu Ala Trp Arg Arg Val Ile Ile Glu Lys 165 170 175 Pro Phe Gly His Asn Leu Glu Ser Ala His Glu Leu Asn Gln Leu Val 180 185 190 Asn Ala Val Phe Pro Glu Ser Ser Val Phe Arg Ile Asp His Tyr Leu 195 200 205 Gly Lys Glu Thr Val Gln Asn Ile Leu Ala Leu Arg Phe Ala Asn Gln 210 215 220 Leu Phe Glu Pro Leu Trp Asn Ser Asn Tyr Val Asp His Val Gln Ile 225 230 235 240 Thr Met Ala Glu Asp Ile Gly Leu Gly Gly Arg Ala Gly Tyr Tyr Asp 245 250 255 Gly Ile Gly Ala Ala Arg Asp Val Ile Gln Asn His Leu Ile Gln Leu 260 265 270 Leu Ala Leu Val Ala Met Glu Glu Pro Ile Ser Phe Val Pro Ala Gln 275 280 285 Leu Gln Ala Glu Lys Ile Lys Val Leu Ser Ala Thr Lys Pro Cys Tyr 290 295 300 Pro Leu Asp Lys Thr Ser Ala Arg Gly Gln Tyr Ala Ala Gly Trp Gln 305 310 315 320 Gly Ser Glu Leu Val Lys Gly Leu Arg Glu Glu Asp Gly Phe Asn Pro 325 330 335 Glu Ser Thr Thr Glu Thr Phe Ala Ala Cys Thr Leu Glu Ile Thr Ser 340 345 350 Arg Arg Trp Ala Gly Val Pro Phe Tyr Leu Arg Thr Gly Lys Arg Leu 355 360 365 Gly Arg Arg Val Thr Glu Ile Ala Val Val Phe Lys Asp Ala Pro His 370 375 380 Gln Pro Phe Asp Gly Asp Met Thr Val Ser Leu Gly Gln Asn Ala Ile 385 390 395 400 Val Ile Arg Val Gln Pro Asp Glu Gly Val Leu Ile Arg Phe Gly Ser 405 410 415 Lys Val Pro Gly Ser Ala Met Glu Val Arg Asp Val Asn Met Asp Phe 420 425 430 Ser Tyr Ser Glu Ser Phe Thr Glu Glu Ser Pro Glu Ala Tyr Glu Arg 435 440 445 Leu Ile Leu Asp Ala Leu Leu Asp Glu Ser Ser Leu Phe Pro Thr Asn 450 455 460 Glu Glu Val Glu Leu Ser Trp Lys Ile Leu Asp Pro Ile Leu Glu Ala 465 470 475 480 Trp Asp Ala Asp Gly Glu Pro Glu Asp Tyr Pro Ala Gly Thr Trp Gly 485 490 495 Pro Lys Ser Ala Asp Glu Met Leu Ser Arg Asn Gly His Thr Trp Arg 500 505 510 Arg Pro 11 20 DNA Artificial Sequence Description of Artificial Sequence Primer zwf-forward 11 tcgacgcggt tctggagcag 20 12 21 DNA Artificial Sequence Description of Artificial Sequence Primer zwf-reverse 12 ctaaattatg gcctgcgcca g 21 13 22 DNA Artificial Sequence Description of Artificial Sequence Universal forward Primer 13 gtaatacgac tcactatagg gc 22 14 18 DNA Artificial Sequence Description of Artificial Sequence M13 reverse primer 14 ytccacgccc caytgrtc 18 15 18 DNA Artificial Sequence Description of Artificial Sequence Internal Primer 1 15 ggaaacaggg gagccgtc 18 16 18 DNA Artificial Sequence Description of Artificial Sequence Internal Primer 2 16 tgctgagata ccagcggt 18 17 17 DNA Artificial Sequence Description of Artificial Sequence fwd primer 17 atggarwcca aygghaa 17 18 18 DNA Artificial Sequence Description of Artificial Sequence rev. primer 18 ytccacgccc caytgrtc 18 19 20 DNA Artificial Sequence Description of Artificial Sequence Primer poxBint1 19 tgcgagatgg tgaatggtgg 20 20 20 DNA Artificial Sequence Description of Artificial Sequence Primer poxBint2 20 gcatgaggca acgcattagc 20 

What is claimed is:
 1. A process for the preparation of L-lysine comprising: a) fermenting an L-lysine producing coryneform bacteria in a culture medium, the bacteria having at least an overexpressed zwf gene encoding the Zwischenferment protein; b) concentrating the L-lysine in the culture medium or in the cells of the bacteria; and c) isolating the L-lysine produced; wherein intracellular activity of pyruvate oxidase encoded by the poxB gene is decreased or switched off in the bacteria.
 2. A process according to claim 1, wherein the endogenous zwf gene is used as the overexpressed zwf gene.
 3. A process according to claim 1, wherein the overexpressed zwf gene is produced by transforming the bacteria with a plasmid vector carrying at least a zwf gene and a promotor.
 4. A process according to claim 2, wherein the overexpressed zwf gene is produced by is achieved by transforming the bacteria with a plasmid vector carrying at least a zwf gene and a promotor.
 5. A process according to claim 1, wherein strains of the genus Corynebacterium are used as the bacteria.
 6. A process for the preparation of L-amino acids comprising: a) fermenting an L-amino acid producing bacteria in a culture medium, the bacteria having at least an overexpressed zwf gene encoding the Zwischenferment protein; b) concentrating the L-amino acid in the culture medium or in the cells of the bacteria, and c) isolating the L-amino acid produced; wherein the intracellular activity of the pyruvate oxidase encoded by the poxB gene is decreased or switched off in the bacteria; and wherein the L-amino acid is selected from the group consisting of L-threonine, L-isoleucine and L-tryptophane.
 7. A process for the preparation of L-lysine, comprising: a) fermenting an L-lysine producing bacteria in a culture medium, the bacteria having at least an overexpressed zwf gene encoding the Zwischenferment protein; b) concentrating the L-lysine in the culture medium or in the cells of the bacteria; and c) isolating the L-lysine produced; wherein intracellular activity of the glucose 6-phosphate isomerase encoded by the pgi gene is decreased or switched off in the bacteria.
 8. A process according to claim 7, wherein the endogenous zwf gene is used as the overexpressed zwf gene.
 9. A process according to claim 7, wherein the overexpressed zwf gene is produced by transforming the bacteria with a plasmid vector carrying at least a zwf gene and a promotor.
 10. A process according to claim 7, wherein strains of the genus Corynebacterium are used as the bacteria.
 11. A coryneform microorganism of the genus Corynebacterium, transformed by the introduction of the plasmid vector as claimed in claim 9, the microorganism additionally containing the zwf gene.
 12. A process for the preparation of L-amino acids comprising: a) fermenting an L-amino acid producing bacteria in a culture medium, the bacteria having at least an overexpressed zwf gene encoding the Zwischenferment protein; b) concentrating the L-amino acid in the culture medium or in the cells of the bacteria; and c) isolating the L-amino acid produced; wherein intracellular activity of the glucose 6-phosphate isomerase encoded by the pgi gene is decreased or switched off in the bacteria; and wherein the L-amino acid is selected from the group consisting of L-threonine, L-isoleucine and L-tryptophane.
 13. An L-amino acid producing coryneform microorganism having increased intracellular activity of the Zwischenferment protein and decreased intracellular activity of pyruvate oxidase.
 14. An L-amino acid producing coryneform microorganism having increased intracellular activity of the Zwischenferment protein and decreased intracellular activity of glucose 6-phosphate isomerase.
 15. The DNA of SEQ ID NO: 9 containing nucleotides 538 to
 2079. 16. The plasmid vector pEC-T18mob2 deposited under the designation DSM13244 in E. coli K-12 DH5α. 